28417480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:279

約数の個数: 128

約数和(自身を含む): 81204480

約数和(自身を除く): 52787000

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 37, 40, 52, 56, 65, 70, 74, 91, 104, 130, 140, 148, 182, 185, 211, 259, 260, 280, 296, 364, 370, 422, 455, 481, 518, 520, 728, 740, 844, 910, 962, 1036, 1055, 1295, 1477, 1480, 1688, 1820, 1924, 2072, 2110, 2405, 2590, 2743, 2954, 3367, 3640, 3848, 4220, 4810, 5180, 5486, 5908, 6734, 7385, 7807, 8440, 9620, 10360, 10972, 11816, 13468, 13715, 14770, 15614, 16835, 19201, 19240, 21944, 26936, 27430, 29540, 31228, 33670, 38402, 39035, 54649, 54860, 59080, 62456, 67340, 76804, 78070, 96005, 101491, 109298, 109720, 134680, 153608, 156140, 192010, 202982, 218596, 273245, 312280, 384020, 405964, 437192, 507455, 546490, 710437, 768040, 811928, 1014910, 1092980, 1420874, 2029820, 2185960, 2841748, 3552185, 4059640, 5683496, 7104370, 14208740, 28417480]

約数ペア:

[(1, 28417480), (2, 14208740), (4, 7104370), (5, 5683496), (7, 4059640), (8, 3552185), (10, 2841748), (13, 2185960), (14, 2029820), (20, 1420874), (26, 1092980), (28, 1014910), (35, 811928), (37, 768040), (40, 710437), (52, 546490), (56, 507455), (65, 437192), (70, 405964), (74, 384020), (91, 312280), (104, 273245), (130, 218596), (140, 202982), (148, 192010), (182, 156140), (185, 153608), (211, 134680), (259, 109720), (260, 109298), (280, 101491), (296, 96005), (364, 78070), (370, 76804), (422, 67340), (455, 62456), (481, 59080), (518, 54860), (520, 54649), (728, 39035), (740, 38402), (844, 33670), (910, 31228), (962, 29540), (1036, 27430), (1055, 26936), (1295, 21944), (1477, 19240), (1480, 19201), (1688, 16835), (1820, 15614), (1924, 14770), (2072, 13715), (2110, 13468), (2405, 11816), (2590, 10972), (2743, 10360), (2954, 9620), (3367, 8440), (3640, 7807), (3848, 7385), (4220, 6734), (4810, 5908), (5180, 5486)]