28857520

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2213}}^1$

素因数の和:2389

約数の個数: 40

約数和(自身を含む): 67535856

約数和(自身を除く): 38678336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2213, 2608, 3260, 4426, 6520, 8852, 11065, 13040, 17704, 22130, 35408, 44260, 88520, 177040, 360719, 721438, 1442876, 1803595, 2885752, 3607190, 5771504, 7214380, 14428760, 28857520]

約数ペア:

[(1, 28857520), (2, 14428760), (4, 7214380), (5, 5771504), (8, 3607190), (10, 2885752), (16, 1803595), (20, 1442876), (40, 721438), (80, 360719), (163, 177040), (326, 88520), (652, 44260), (815, 35408), (1304, 22130), (1630, 17704), (2213, 13040), (2608, 11065), (3260, 8852), (4426, 6520)]