25687640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{739}}^1$

素因数の和:840

約数の個数: 64

約数和(自身を含む): 63936000

約数和(自身を除く): 38248360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 158, 220, 316, 395, 440, 632, 739, 790, 869, 1478, 1580, 1738, 2956, 3160, 3476, 3695, 4345, 5912, 6952, 7390, 8129, 8690, 14780, 16258, 17380, 29560, 32516, 34760, 40645, 58381, 65032, 81290, 116762, 162580, 233524, 291905, 325160, 467048, 583810, 642191, 1167620, 1284382, 2335240, 2568764, 3210955, 5137528, 6421910, 12843820, 25687640]

約数ペア:

[(1, 25687640), (2, 12843820), (4, 6421910), (5, 5137528), (8, 3210955), (10, 2568764), (11, 2335240), (20, 1284382), (22, 1167620), (40, 642191), (44, 583810), (55, 467048), (79, 325160), (88, 291905), (110, 233524), (158, 162580), (220, 116762), (316, 81290), (395, 65032), (440, 58381), (632, 40645), (739, 34760), (790, 32516), (869, 29560), (1478, 17380), (1580, 16258), (1738, 14780), (2956, 8690), (3160, 8129), (3476, 7390), (3695, 6952), (4345, 5912)]