18086540

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 39481344

約数和(自身を除く): 21394804

約数列:

[1, 2, 4, 5, 10, 20, 47, 71, 94, 142, 188, 235, 271, 284, 355, 470, 542, 710, 940, 1084, 1355, 1420, 2710, 3337, 5420, 6674, 12737, 13348, 16685, 19241, 25474, 33370, 38482, 50948, 63685, 66740, 76964, 96205, 127370, 192410, 254740, 384820, 904327, 1808654, 3617308, 4521635, 9043270, 18086540]

約数ペア:

[(1, 18086540), (2, 9043270), (4, 4521635), (5, 3617308), (10, 1808654), (20, 904327), (47, 384820), (71, 254740), (94, 192410), (142, 127370), (188, 96205), (235, 76964), (271, 66740), (284, 63685), (355, 50948), (470, 38482), (542, 33370), (710, 25474), (940, 19241), (1084, 16685), (1355, 13348), (1420, 12737), (2710, 6674), (3337, 5420)]