21195700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2683}}^1$

素因数の和:2776

約数の個数: 36

約数和(自身を含む): 46594240

約数和(自身を除く): 25398540

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2683, 3950, 5366, 7900, 10732, 13415, 26830, 53660, 67075, 134150, 211957, 268300, 423914, 847828, 1059785, 2119570, 4239140, 5298925, 10597850, 21195700]

約数ペア:

[(1, 21195700), (2, 10597850), (4, 5298925), (5, 4239140), (10, 2119570), (20, 1059785), (25, 847828), (50, 423914), (79, 268300), (100, 211957), (158, 134150), (316, 67075), (395, 53660), (790, 26830), (1580, 13415), (1975, 10732), (2683, 7900), (3950, 5366)]