397877980

素因数分解:

$2^2\times 5^1\times {\mathrm{1543}}^1\times {\mathrm{12893}}^1$

素因数の和:14445

約数の個数: 24

約数和(自身を含む): 836150112

約数和(自身を除く): 438272132

約数列:

[1, 2, 4, 5, 10, 20, 1543, 3086, 6172, 7715, 12893, 15430, 25786, 30860, 51572, 64465, 128930, 257860, 19893899, 39787798, 79575596, 99469495, 198938990, 397877980]

約数ペア:

[(1, 397877980), (2, 198938990), (4, 99469495), (5, 79575596), (10, 39787798), (20, 19893899), (1543, 257860), (3086, 128930), (6172, 64465), (7715, 51572), (12893, 30860), (15430, 25786)]