21239240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48271}}^1$

素因数の和:48293

約数の個数: 32

約数和(自身を含む): 52133760

約数和(自身を除く): 30894520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48271, 96542, 193084, 241355, 386168, 482710, 530981, 965420, 1061962, 1930840, 2123924, 2654905, 4247848, 5309810, 10619620, 21239240]

約数ペア:

[(1, 21239240), (2, 10619620), (4, 5309810), (5, 4247848), (8, 2654905), (10, 2123924), (11, 1930840), (20, 1061962), (22, 965420), (40, 530981), (44, 482710), (55, 386168), (88, 241355), (110, 193084), (220, 96542), (440, 48271)]