77989840

素因数分解:

$2^4\times 5^1\times {\mathrm{974873}}^1$

素因数の和:974886

約数の個数: 20

約数和(自身を含む): 181326564

約数和(自身を除く): 103336724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 974873, 1949746, 3899492, 4874365, 7798984, 9748730, 15597968, 19497460, 38994920, 77989840]

約数ペア:

[(1, 77989840), (2, 38994920), (4, 19497460), (5, 15597968), (8, 9748730), (10, 7798984), (16, 4874365), (20, 3899492), (40, 1949746), (80, 974873)]