21287136

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{461}}^1$

素因数の和:524

約数の個数: 96

約数和(自身を含む): 61937568

約数和(自身を除く): 40650432

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 37, 39, 48, 52, 74, 78, 96, 104, 111, 148, 156, 208, 222, 296, 312, 416, 444, 461, 481, 592, 624, 888, 922, 962, 1184, 1248, 1383, 1443, 1776, 1844, 1924, 2766, 2886, 3552, 3688, 3848, 5532, 5772, 5993, 7376, 7696, 11064, 11544, 11986, 14752, 15392, 17057, 17979, 22128, 23088, 23972, 34114, 35958, 44256, 46176, 47944, 51171, 68228, 71916, 95888, 102342, 136456, 143832, 191776, 204684, 221741, 272912, 287664, 409368, 443482, 545824, 575328, 665223, 818736, 886964, 1330446, 1637472, 1773928, 2660892, 3547856, 5321784, 7095712, 10643568, 21287136]

約数ペア:

[(1, 21287136), (2, 10643568), (3, 7095712), (4, 5321784), (6, 3547856), (8, 2660892), (12, 1773928), (13, 1637472), (16, 1330446), (24, 886964), (26, 818736), (32, 665223), (37, 575328), (39, 545824), (48, 443482), (52, 409368), (74, 287664), (78, 272912), (96, 221741), (104, 204684), (111, 191776), (148, 143832), (156, 136456), (208, 102342), (222, 95888), (296, 71916), (312, 68228), (416, 51171), (444, 47944), (461, 46176), (481, 44256), (592, 35958), (624, 34114), (888, 23972), (922, 23088), (962, 22128), (1184, 17979), (1248, 17057), (1383, 15392), (1443, 14752), (1776, 11986), (1844, 11544), (1924, 11064), (2766, 7696), (2886, 7376), (3552, 5993), (3688, 5772), (3848, 5532)]