8438840

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1867}}^1$

素因数の和:1991

約数の個数: 32

約数和(自身を含む): 19165680

約数和(自身を除く): 10726840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 1867, 2260, 3734, 4520, 7468, 9335, 14936, 18670, 37340, 74680, 210971, 421942, 843884, 1054855, 1687768, 2109710, 4219420, 8438840]

約数ペア:

[(1, 8438840), (2, 4219420), (4, 2109710), (5, 1687768), (8, 1054855), (10, 843884), (20, 421942), (40, 210971), (113, 74680), (226, 37340), (452, 18670), (565, 14936), (904, 9335), (1130, 7468), (1867, 4520), (2260, 3734)]