8179840

素因数分解:

$2^7\times 5^1\times {\mathrm{12781}}^1$

素因数の和:12800

約数の個数: 32

約数和(自身を含む): 19556460

約数和(自身を除く): 11376620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 12781, 25562, 51124, 63905, 102248, 127810, 204496, 255620, 408992, 511240, 817984, 1022480, 1635968, 2044960, 4089920, 8179840]

約数ペア:

[(1, 8179840), (2, 4089920), (4, 2044960), (5, 1635968), (8, 1022480), (10, 817984), (16, 511240), (20, 408992), (32, 255620), (40, 204496), (64, 127810), (80, 102248), (128, 63905), (160, 51124), (320, 25562), (640, 12781)]