520020520

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{24953}}^1$

素因数の和:25485

約数の個数: 32

約数和(自身を含む): 1172338920

約数和(自身を除く): 652318400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 2084, 2605, 4168, 5210, 10420, 20840, 24953, 49906, 99812, 124765, 199624, 249530, 499060, 998120, 13000513, 26001026, 52002052, 65002565, 104004104, 130005130, 260010260, 520020520]

約数ペア:

[(1, 520020520), (2, 260010260), (4, 130005130), (5, 104004104), (8, 65002565), (10, 52002052), (20, 26001026), (40, 13000513), (521, 998120), (1042, 499060), (2084, 249530), (2605, 199624), (4168, 124765), (5210, 99812), (10420, 49906), (20840, 24953)]