87721240

素因数分解:

$2^3\times 5^1\times {\mathrm{2193031}}^1$

素因数の和:2193042

約数の個数: 16

約数和(自身を含む): 197372880

約数和(自身を除く): 109651640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2193031, 4386062, 8772124, 10965155, 17544248, 21930310, 43860620, 87721240]

約数ペア:

[(1, 87721240), (2, 43860620), (4, 21930310), (5, 17544248), (8, 10965155), (10, 8772124), (20, 4386062), (40, 2193031)]