20100472

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 45144000

約数和(自身を除く): 25043528

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 89, 109, 148, 178, 218, 259, 296, 356, 436, 518, 623, 712, 763, 872, 1036, 1246, 1526, 2072, 2492, 3052, 3293, 4033, 4984, 6104, 6586, 8066, 9701, 13172, 16132, 19402, 23051, 26344, 28231, 32264, 38804, 46102, 56462, 67907, 77608, 92204, 112924, 135814, 184408, 225848, 271628, 358937, 543256, 717874, 1435748, 2512559, 2871496, 5025118, 10050236, 20100472]

約数ペア:

[(1, 20100472), (2, 10050236), (4, 5025118), (7, 2871496), (8, 2512559), (14, 1435748), (28, 717874), (37, 543256), (56, 358937), (74, 271628), (89, 225848), (109, 184408), (148, 135814), (178, 112924), (218, 92204), (259, 77608), (296, 67907), (356, 56462), (436, 46102), (518, 38804), (623, 32264), (712, 28231), (763, 26344), (872, 23051), (1036, 19402), (1246, 16132), (1526, 13172), (2072, 9701), (2492, 8066), (3052, 6586), (3293, 6104), (4033, 4984)]