18254840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11131}}^1$

素因数の和:11183

約数の個数: 32

約数和(自身を含む): 42078960

約数和(自身を除く): 23824120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11131, 22262, 44524, 55655, 89048, 111310, 222620, 445240, 456371, 912742, 1825484, 2281855, 3650968, 4563710, 9127420, 18254840]

約数ペア:

[(1, 18254840), (2, 9127420), (4, 4563710), (5, 3650968), (8, 2281855), (10, 1825484), (20, 912742), (40, 456371), (41, 445240), (82, 222620), (164, 111310), (205, 89048), (328, 55655), (410, 44524), (820, 22262), (1640, 11131)]