4272640

素因数分解:

$2^9\times 5^1\times {\mathrm{1669}}^1$

素因数の和:1692

約数の個数: 40

約数和(自身を含む): 10250460

約数和(自身を除く): 5977820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 1669, 2560, 3338, 6676, 8345, 13352, 16690, 26704, 33380, 53408, 66760, 106816, 133520, 213632, 267040, 427264, 534080, 854528, 1068160, 2136320, 4272640]

約数ペア:

[(1, 4272640), (2, 2136320), (4, 1068160), (5, 854528), (8, 534080), (10, 427264), (16, 267040), (20, 213632), (32, 133520), (40, 106816), (64, 66760), (80, 53408), (128, 33380), (160, 26704), (256, 16690), (320, 13352), (512, 8345), (640, 6676), (1280, 3338), (1669, 2560)]