4990940

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{971}}^1$

素因数の和:1237

約数の個数: 24

約数和(自身を含む): 10532592

約数和(自身を除く): 5541652

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 971, 1028, 1285, 1942, 2570, 3884, 4855, 5140, 9710, 19420, 249547, 499094, 998188, 1247735, 2495470, 4990940]

約数ペア:

[(1, 4990940), (2, 2495470), (4, 1247735), (5, 998188), (10, 499094), (20, 249547), (257, 19420), (514, 9710), (971, 5140), (1028, 4855), (1285, 3884), (1942, 2570)]