81042640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144719}}^1$

素因数の和:144739

約数の個数: 40

約数和(自身を含む): 215343360

約数和(自身を除く): 134300720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144719, 289438, 578876, 723595, 1013033, 1157752, 1447190, 2026066, 2315504, 2894380, 4052132, 5065165, 5788760, 8104264, 10130330, 11577520, 16208528, 20260660, 40521320, 81042640]

約数ペア:

[(1, 81042640), (2, 40521320), (4, 20260660), (5, 16208528), (7, 11577520), (8, 10130330), (10, 8104264), (14, 5788760), (16, 5065165), (20, 4052132), (28, 2894380), (35, 2315504), (40, 2026066), (56, 1447190), (70, 1157752), (80, 1013033), (112, 723595), (140, 578876), (280, 289438), (560, 144719)]