20982950

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^2\times {\mathrm{499}}^1$

素因数の和:569

約数の個数: 36

約数和(自身を含む): 40501500

約数和(自身を除く): 19518550

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 145, 290, 499, 725, 841, 998, 1450, 1682, 2495, 4205, 4990, 8410, 12475, 14471, 21025, 24950, 28942, 42050, 72355, 144710, 361775, 419659, 723550, 839318, 2098295, 4196590, 10491475, 20982950]

約数ペア:

[(1, 20982950), (2, 10491475), (5, 4196590), (10, 2098295), (25, 839318), (29, 723550), (50, 419659), (58, 361775), (145, 144710), (290, 72355), (499, 42050), (725, 28942), (841, 24950), (998, 21025), (1450, 14471), (1682, 12475), (2495, 8410), (4205, 4990)]