12439640

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1013}}^1$

素因数の和:1331

約数の個数: 32

約数和(自身を含む): 28108080

約数和(自身を除く): 15668440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1013, 1228, 1535, 2026, 2456, 3070, 4052, 5065, 6140, 8104, 10130, 12280, 20260, 40520, 310991, 621982, 1243964, 1554955, 2487928, 3109910, 6219820, 12439640]

約数ペア:

[(1, 12439640), (2, 6219820), (4, 3109910), (5, 2487928), (8, 1554955), (10, 1243964), (20, 621982), (40, 310991), (307, 40520), (614, 20260), (1013, 12280), (1228, 10130), (1535, 8104), (2026, 6140), (2456, 5065), (3070, 4052)]