20499480

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:85

約数の個数: 224

約数和(自身を含む): 74761200

約数和(自身を除く): 54261720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 37, 38, 40, 45, 54, 57, 60, 72, 74, 76, 81, 90, 95, 108, 111, 114, 120, 135, 148, 152, 162, 171, 180, 185, 190, 216, 222, 228, 243, 270, 285, 296, 324, 333, 342, 360, 370, 380, 405, 444, 456, 486, 513, 540, 555, 570, 648, 666, 684, 703, 729, 740, 760, 810, 855, 888, 972, 999, 1026, 1080, 1110, 1140, 1215, 1332, 1368, 1406, 1458, 1480, 1539, 1620, 1665, 1710, 1944, 1998, 2052, 2109, 2220, 2280, 2430, 2565, 2664, 2812, 2916, 2997, 3078, 3240, 3330, 3420, 3515, 3645, 3996, 4104, 4218, 4440, 4617, 4860, 4995, 5130, 5624, 5832, 5994, 6156, 6327, 6660, 6840, 7030, 7290, 7695, 7992, 8436, 8991, 9234, 9720, 9990, 10260, 10545, 11988, 12312, 12654, 13320, 13851, 14060, 14580, 14985, 15390, 16872, 17982, 18468, 18981, 19980, 20520, 21090, 23085, 23976, 25308, 26973, 27702, 28120, 29160, 29970, 30780, 31635, 35964, 36936, 37962, 39960, 42180, 44955, 46170, 50616, 53946, 55404, 56943, 59940, 61560, 63270, 69255, 71928, 75924, 84360, 89910, 92340, 94905, 107892, 110808, 113886, 119880, 126540, 134865, 138510, 151848, 170829, 179820, 184680, 189810, 215784, 227772, 253080, 269730, 277020, 284715, 341658, 359640, 379620, 455544, 512487, 539460, 554040, 569430, 683316, 759240, 854145, 1024974, 1078920, 1138860, 1366632, 1708290, 2049948, 2277720, 2562435, 3416580, 4099896, 5124870, 6833160, 10249740, 20499480]

約数ペア:

[(1, 20499480), (2, 10249740), (3, 6833160), (4, 5124870), (5, 4099896), (6, 3416580), (8, 2562435), (9, 2277720), (10, 2049948), (12, 1708290), (15, 1366632), (18, 1138860), (19, 1078920), (20, 1024974), (24, 854145), (27, 759240), (30, 683316), (36, 569430), (37, 554040), (38, 539460), (40, 512487), (45, 455544), (54, 379620), (57, 359640), (60, 341658), (72, 284715), (74, 277020), (76, 269730), (81, 253080), (90, 227772), (95, 215784), (108, 189810), (111, 184680), (114, 179820), (120, 170829), (135, 151848), (148, 138510), (152, 134865), (162, 126540), (171, 119880), (180, 113886), (185, 110808), (190, 107892), (216, 94905), (222, 92340), (228, 89910), (243, 84360), (270, 75924), (285, 71928), (296, 69255), (324, 63270), (333, 61560), (342, 59940), (360, 56943), (370, 55404), (380, 53946), (405, 50616), (444, 46170), (456, 44955), (486, 42180), (513, 39960), (540, 37962), (555, 36936), (570, 35964), (648, 31635), (666, 30780), (684, 29970), (703, 29160), (729, 28120), (740, 27702), (760, 26973), (810, 25308), (855, 23976), (888, 23085), (972, 21090), (999, 20520), (1026, 19980), (1080, 18981), (1110, 18468), (1140, 17982), (1215, 16872), (1332, 15390), (1368, 14985), (1406, 14580), (1458, 14060), (1480, 13851), (1539, 13320), (1620, 12654), (1665, 12312), (1710, 11988), (1944, 10545), (1998, 10260), (2052, 9990), (2109, 9720), (2220, 9234), (2280, 8991), (2430, 8436), (2565, 7992), (2664, 7695), (2812, 7290), (2916, 7030), (2997, 6840), (3078, 6660), (3240, 6327), (3330, 6156), (3420, 5994), (3515, 5832), (3645, 5624), (3996, 5130), (4104, 4995), (4218, 4860), (4440, 4617)]