21664450

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:331

約数の個数: 48

約数和(自身を含む): 42497280

約数和(自身を除く): 20832830

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 67, 134, 145, 223, 290, 335, 446, 670, 725, 1115, 1450, 1675, 1943, 2230, 3350, 3886, 5575, 6467, 9715, 11150, 12934, 14941, 19430, 29882, 32335, 48575, 64670, 74705, 97150, 149410, 161675, 323350, 373525, 433289, 747050, 866578, 2166445, 4332890, 10832225, 21664450]

約数ペア:

[(1, 21664450), (2, 10832225), (5, 4332890), (10, 2166445), (25, 866578), (29, 747050), (50, 433289), (58, 373525), (67, 323350), (134, 161675), (145, 149410), (223, 97150), (290, 74705), (335, 64670), (446, 48575), (670, 32335), (725, 29882), (1115, 19430), (1450, 14941), (1675, 12934), (1943, 11150), (2230, 9715), (3350, 6467), (3886, 5575)]