19517740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1123}}^1$

素因数の和:1222

約数の個数: 48

約数和(自身を含む): 45319680

約数和(自身を除く): 25801940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1123, 1580, 1738, 2246, 3476, 4345, 4492, 5615, 8690, 11230, 12353, 17380, 22460, 24706, 49412, 61765, 88717, 123530, 177434, 247060, 354868, 443585, 887170, 975887, 1774340, 1951774, 3903548, 4879435, 9758870, 19517740]

約数ペア:

[(1, 19517740), (2, 9758870), (4, 4879435), (5, 3903548), (10, 1951774), (11, 1774340), (20, 975887), (22, 887170), (44, 443585), (55, 354868), (79, 247060), (110, 177434), (158, 123530), (220, 88717), (316, 61765), (395, 49412), (790, 24706), (869, 22460), (1123, 17380), (1580, 12353), (1738, 11230), (2246, 8690), (3476, 5615), (4345, 4492)]