64842920

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{19531}}^1$

素因数の和:19625

約数の個数: 32

約数和(自身を含む): 147661920

約数和(自身を除く): 82819000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 19531, 39062, 78124, 97655, 156248, 195310, 390620, 781240, 1621073, 3242146, 6484292, 8105365, 12968584, 16210730, 32421460, 64842920]

約数ペア:

[(1, 64842920), (2, 32421460), (4, 16210730), (5, 12968584), (8, 8105365), (10, 6484292), (20, 3242146), (40, 1621073), (83, 781240), (166, 390620), (332, 195310), (415, 156248), (664, 97655), (830, 78124), (1660, 39062), (3320, 19531)]