202128400

素因数分解:

$2^4\times 5^2\times {\mathrm{505321}}^1$

素因数の和:505339

約数の個数: 30

約数和(自身を含む): 485614442

約数和(自身を除く): 283486042

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 505321, 1010642, 2021284, 2526605, 4042568, 5053210, 8085136, 10106420, 12633025, 20212840, 25266050, 40425680, 50532100, 101064200, 202128400]

約数ペア:

[(1, 202128400), (2, 101064200), (4, 50532100), (5, 40425680), (8, 25266050), (10, 20212840), (16, 12633025), (20, 10106420), (25, 8085136), (40, 5053210), (50, 4042568), (80, 2526605), (100, 2021284), (200, 1010642), (400, 505321)]