30981988

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{541}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 55240640

約数和(自身を除く): 24258652

約数列:

[1, 2, 4, 103, 139, 206, 278, 412, 541, 556, 1082, 2164, 14317, 28634, 55723, 57268, 75199, 111446, 150398, 222892, 300796, 7745497, 15490994, 30981988]

約数ペア:

[(1, 30981988), (2, 15490994), (4, 7745497), (103, 300796), (139, 222892), (206, 150398), (278, 111446), (412, 75199), (541, 57268), (556, 55723), (1082, 28634), (2164, 14317)]