18349820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1123}}^1$

素因数の和:1194

約数の個数: 48

約数和(自身を含む): 41543040

約数和(自身を除く): 23193220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1123, 1634, 2246, 3268, 4085, 4492, 5615, 8170, 11230, 16340, 21337, 22460, 42674, 48289, 85348, 96578, 106685, 193156, 213370, 241445, 426740, 482890, 917491, 965780, 1834982, 3669964, 4587455, 9174910, 18349820]

約数ペア:

[(1, 18349820), (2, 9174910), (4, 4587455), (5, 3669964), (10, 1834982), (19, 965780), (20, 917491), (38, 482890), (43, 426740), (76, 241445), (86, 213370), (95, 193156), (172, 106685), (190, 96578), (215, 85348), (380, 48289), (430, 42674), (817, 22460), (860, 21337), (1123, 16340), (1634, 11230), (2246, 8170), (3268, 5615), (4085, 4492)]