20571408

素因数分解:

$2^4\times 3^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:84

約数の個数: 240

約数和(自身を含む): 72037056

約数和(自身を除く): 51465648

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 13, 16, 18, 22, 24, 26, 27, 33, 36, 37, 39, 44, 48, 52, 54, 66, 72, 74, 78, 81, 88, 99, 104, 108, 111, 117, 132, 143, 144, 148, 156, 162, 176, 198, 208, 216, 222, 234, 243, 264, 286, 296, 297, 312, 324, 333, 351, 396, 407, 429, 432, 444, 468, 481, 486, 528, 572, 592, 594, 624, 648, 666, 702, 792, 814, 858, 888, 891, 936, 962, 972, 999, 1053, 1144, 1188, 1221, 1287, 1296, 1332, 1404, 1443, 1584, 1628, 1716, 1776, 1782, 1872, 1924, 1944, 1998, 2106, 2288, 2376, 2442, 2574, 2664, 2673, 2808, 2886, 2997, 3159, 3256, 3432, 3564, 3663, 3848, 3861, 3888, 3996, 4212, 4329, 4752, 4884, 5148, 5291, 5328, 5346, 5616, 5772, 5994, 6318, 6512, 6864, 7128, 7326, 7696, 7722, 7992, 8424, 8658, 8991, 9768, 10296, 10582, 10692, 10989, 11544, 11583, 11988, 12636, 12987, 14256, 14652, 15444, 15873, 15984, 16848, 17316, 17982, 19536, 20592, 21164, 21384, 21978, 23088, 23166, 23976, 25272, 25974, 29304, 30888, 31746, 32967, 34632, 34749, 35964, 38961, 42328, 42768, 43956, 46332, 47619, 47952, 50544, 51948, 58608, 61776, 63492, 65934, 69264, 69498, 71928, 77922, 84656, 87912, 92664, 95238, 98901, 103896, 116883, 126984, 131868, 138996, 142857, 143856, 155844, 175824, 185328, 190476, 197802, 207792, 233766, 253968, 263736, 277992, 285714, 311688, 380952, 395604, 428571, 467532, 527472, 555984, 571428, 623376, 761904, 791208, 857142, 935064, 1142856, 1285713, 1582416, 1714284, 1870128, 2285712, 2571426, 3428568, 5142852, 6857136, 10285704, 20571408]

約数ペア:

[(1, 20571408), (2, 10285704), (3, 6857136), (4, 5142852), (6, 3428568), (8, 2571426), (9, 2285712), (11, 1870128), (12, 1714284), (13, 1582416), (16, 1285713), (18, 1142856), (22, 935064), (24, 857142), (26, 791208), (27, 761904), (33, 623376), (36, 571428), (37, 555984), (39, 527472), (44, 467532), (48, 428571), (52, 395604), (54, 380952), (66, 311688), (72, 285714), (74, 277992), (78, 263736), (81, 253968), (88, 233766), (99, 207792), (104, 197802), (108, 190476), (111, 185328), (117, 175824), (132, 155844), (143, 143856), (144, 142857), (148, 138996), (156, 131868), (162, 126984), (176, 116883), (198, 103896), (208, 98901), (216, 95238), (222, 92664), (234, 87912), (243, 84656), (264, 77922), (286, 71928), (296, 69498), (297, 69264), (312, 65934), (324, 63492), (333, 61776), (351, 58608), (396, 51948), (407, 50544), (429, 47952), (432, 47619), (444, 46332), (468, 43956), (481, 42768), (486, 42328), (528, 38961), (572, 35964), (592, 34749), (594, 34632), (624, 32967), (648, 31746), (666, 30888), (702, 29304), (792, 25974), (814, 25272), (858, 23976), (888, 23166), (891, 23088), (936, 21978), (962, 21384), (972, 21164), (999, 20592), (1053, 19536), (1144, 17982), (1188, 17316), (1221, 16848), (1287, 15984), (1296, 15873), (1332, 15444), (1404, 14652), (1443, 14256), (1584, 12987), (1628, 12636), (1716, 11988), (1776, 11583), (1782, 11544), (1872, 10989), (1924, 10692), (1944, 10582), (1998, 10296), (2106, 9768), (2288, 8991), (2376, 8658), (2442, 8424), (2574, 7992), (2664, 7722), (2673, 7696), (2808, 7326), (2886, 7128), (2997, 6864), (3159, 6512), (3256, 6318), (3432, 5994), (3564, 5772), (3663, 5616), (3848, 5346), (3861, 5328), (3888, 5291), (3996, 5148), (4212, 4884), (4329, 4752)]