28051920

素因数分解:

$2^4\times 3^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:81

約数の個数: 280

約数和(自身を含む): 108154536

約数和(自身を除く): 80102616

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 36, 37, 39, 40, 45, 48, 52, 54, 60, 65, 72, 74, 78, 80, 81, 90, 104, 108, 111, 117, 120, 130, 135, 144, 148, 156, 162, 180, 185, 195, 208, 216, 222, 234, 240, 243, 260, 270, 296, 312, 324, 333, 351, 360, 370, 390, 405, 432, 444, 468, 481, 486, 520, 540, 555, 585, 592, 624, 648, 666, 702, 720, 729, 740, 780, 810, 888, 936, 962, 972, 999, 1040, 1053, 1080, 1110, 1170, 1215, 1296, 1332, 1404, 1443, 1458, 1480, 1560, 1620, 1665, 1755, 1776, 1872, 1924, 1944, 1998, 2106, 2160, 2220, 2340, 2405, 2430, 2664, 2808, 2886, 2916, 2960, 2997, 3120, 3159, 3240, 3330, 3510, 3645, 3848, 3888, 3996, 4212, 4329, 4440, 4680, 4810, 4860, 4995, 5265, 5328, 5616, 5772, 5832, 5994, 6318, 6480, 6660, 7020, 7215, 7290, 7696, 7992, 8424, 8658, 8880, 8991, 9360, 9477, 9620, 9720, 9990, 10530, 11544, 11664, 11988, 12636, 12987, 13320, 14040, 14430, 14580, 14985, 15795, 15984, 16848, 17316, 17982, 18954, 19240, 19440, 19980, 21060, 21645, 23088, 23976, 25272, 25974, 26640, 26973, 28080, 28860, 29160, 29970, 31590, 34632, 35964, 37908, 38480, 38961, 39960, 42120, 43290, 44955, 47385, 47952, 50544, 51948, 53946, 57720, 58320, 59940, 63180, 64935, 69264, 71928, 75816, 77922, 79920, 84240, 86580, 89910, 94770, 103896, 107892, 115440, 116883, 119880, 126360, 129870, 134865, 143856, 151632, 155844, 173160, 179820, 189540, 194805, 207792, 215784, 233766, 239760, 252720, 259740, 269730, 311688, 346320, 350649, 359640, 379080, 389610, 431568, 467532, 519480, 539460, 584415, 623376, 701298, 719280, 758160, 779220, 935064, 1038960, 1078920, 1168830, 1402596, 1558440, 1753245, 1870128, 2157840, 2337660, 2805192, 3116880, 3506490, 4675320, 5610384, 7012980, 9350640, 14025960, 28051920]

約数ペア:

[(1, 28051920), (2, 14025960), (3, 9350640), (4, 7012980), (5, 5610384), (6, 4675320), (8, 3506490), (9, 3116880), (10, 2805192), (12, 2337660), (13, 2157840), (15, 1870128), (16, 1753245), (18, 1558440), (20, 1402596), (24, 1168830), (26, 1078920), (27, 1038960), (30, 935064), (36, 779220), (37, 758160), (39, 719280), (40, 701298), (45, 623376), (48, 584415), (52, 539460), (54, 519480), (60, 467532), (65, 431568), (72, 389610), (74, 379080), (78, 359640), (80, 350649), (81, 346320), (90, 311688), (104, 269730), (108, 259740), (111, 252720), (117, 239760), (120, 233766), (130, 215784), (135, 207792), (144, 194805), (148, 189540), (156, 179820), (162, 173160), (180, 155844), (185, 151632), (195, 143856), (208, 134865), (216, 129870), (222, 126360), (234, 119880), (240, 116883), (243, 115440), (260, 107892), (270, 103896), (296, 94770), (312, 89910), (324, 86580), (333, 84240), (351, 79920), (360, 77922), (370, 75816), (390, 71928), (405, 69264), (432, 64935), (444, 63180), (468, 59940), (481, 58320), (486, 57720), (520, 53946), (540, 51948), (555, 50544), (585, 47952), (592, 47385), (624, 44955), (648, 43290), (666, 42120), (702, 39960), (720, 38961), (729, 38480), (740, 37908), (780, 35964), (810, 34632), (888, 31590), (936, 29970), (962, 29160), (972, 28860), (999, 28080), (1040, 26973), (1053, 26640), (1080, 25974), (1110, 25272), (1170, 23976), (1215, 23088), (1296, 21645), (1332, 21060), (1404, 19980), (1443, 19440), (1458, 19240), (1480, 18954), (1560, 17982), (1620, 17316), (1665, 16848), (1755, 15984), (1776, 15795), (1872, 14985), (1924, 14580), (1944, 14430), (1998, 14040), (2106, 13320), (2160, 12987), (2220, 12636), (2340, 11988), (2405, 11664), (2430, 11544), (2664, 10530), (2808, 9990), (2886, 9720), (2916, 9620), (2960, 9477), (2997, 9360), (3120, 8991), (3159, 8880), (3240, 8658), (3330, 8424), (3510, 7992), (3645, 7696), (3848, 7290), (3888, 7215), (3996, 7020), (4212, 6660), (4329, 6480), (4440, 6318), (4680, 5994), (4810, 5832), (4860, 5772), (4995, 5616), (5265, 5328)]