18128180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4177}}^1$

素因数の和:4224

約数の個数: 48

約数和(自身を含む): 44921856

約数和(自身を除く): 26793676

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4177, 4340, 8354, 16708, 20885, 29239, 41770, 58478, 83540, 116956, 129487, 146195, 258974, 292390, 517948, 584780, 647435, 906409, 1294870, 1812818, 2589740, 3625636, 4532045, 9064090, 18128180]

約数ペア:

[(1, 18128180), (2, 9064090), (4, 4532045), (5, 3625636), (7, 2589740), (10, 1812818), (14, 1294870), (20, 906409), (28, 647435), (31, 584780), (35, 517948), (62, 292390), (70, 258974), (124, 146195), (140, 129487), (155, 116956), (217, 83540), (310, 58478), (434, 41770), (620, 29239), (868, 20885), (1085, 16708), (2170, 8354), (4177, 4340)]