131248400

素因数分解:

$2^4\times 5^2\times {\mathrm{328121}}^1$

素因数の和:328139

約数の個数: 30

約数和(自身を含む): 315325242

約数和(自身を除く): 184076842

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 328121, 656242, 1312484, 1640605, 2624968, 3281210, 5249936, 6562420, 8203025, 13124840, 16406050, 26249680, 32812100, 65624200, 131248400]

約数ペア:

[(1, 131248400), (2, 65624200), (4, 32812100), (5, 26249680), (8, 16406050), (10, 13124840), (16, 8203025), (20, 6562420), (25, 5249936), (40, 3281210), (50, 2624968), (80, 1640605), (100, 1312484), (200, 656242), (400, 328121)]