12920500

素因数分解:

$2^2\times 5^3\times {\mathrm{25841}}^1$

素因数の和:25860

約数の個数: 24

約数和(自身を含む): 28219464

約数和(自身を除く): 15298964

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 25841, 51682, 103364, 129205, 258410, 516820, 646025, 1292050, 2584100, 3230125, 6460250, 12920500]

約数ペア:

[(1, 12920500), (2, 6460250), (4, 3230125), (5, 2584100), (10, 1292050), (20, 646025), (25, 516820), (50, 258410), (100, 129205), (125, 103364), (250, 51682), (500, 25841)]