28961840

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2221}}^1$

素因数の和:2397

約数の個数: 40

約数和(自身を含む): 67779888

約数和(自身を除く): 38818048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2221, 2608, 3260, 4442, 6520, 8884, 11105, 13040, 17768, 22210, 35536, 44420, 88840, 177680, 362023, 724046, 1448092, 1810115, 2896184, 3620230, 5792368, 7240460, 14480920, 28961840]

約数ペア:

[(1, 28961840), (2, 14480920), (4, 7240460), (5, 5792368), (8, 3620230), (10, 2896184), (16, 1810115), (20, 1448092), (40, 724046), (80, 362023), (163, 177680), (326, 88840), (652, 44420), (815, 35536), (1304, 22210), (1630, 17768), (2221, 13040), (2608, 11105), (3260, 8884), (4442, 6520)]