61540520

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{2953}}^1$

素因数の和:3485

約数の個数: 32

約数和(自身を含む): 138778920

約数和(自身を除く): 77238400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 2084, 2605, 2953, 4168, 5210, 5906, 10420, 11812, 14765, 20840, 23624, 29530, 59060, 118120, 1538513, 3077026, 6154052, 7692565, 12308104, 15385130, 30770260, 61540520]

約数ペア:

[(1, 61540520), (2, 30770260), (4, 15385130), (5, 12308104), (8, 7692565), (10, 6154052), (20, 3077026), (40, 1538513), (521, 118120), (1042, 59060), (2084, 29530), (2605, 23624), (2953, 20840), (4168, 14765), (5210, 11812), (5906, 10420)]