18042520

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6353}}^1$

素因数の和:6435

約数の個数: 32

約数和(自身を含む): 41173920

約数和(自身を除く): 23131400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 6353, 12706, 25412, 31765, 50824, 63530, 127060, 254120, 451063, 902126, 1804252, 2255315, 3608504, 4510630, 9021260, 18042520]

約数ペア:

[(1, 18042520), (2, 9021260), (4, 4510630), (5, 3608504), (8, 2255315), (10, 1804252), (20, 902126), (40, 451063), (71, 254120), (142, 127060), (284, 63530), (355, 50824), (568, 31765), (710, 25412), (1420, 12706), (2840, 6353)]