18928580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{887}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 43860096

約数和(自身を除く): 24931516

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 887, 970, 1067, 1774, 1940, 2134, 3548, 4268, 4435, 5335, 8870, 9757, 10670, 17740, 19514, 21340, 39028, 48785, 86039, 97570, 172078, 195140, 344156, 430195, 860390, 946429, 1720780, 1892858, 3785716, 4732145, 9464290, 18928580]

約数ペア:

[(1, 18928580), (2, 9464290), (4, 4732145), (5, 3785716), (10, 1892858), (11, 1720780), (20, 946429), (22, 860390), (44, 430195), (55, 344156), (97, 195140), (110, 172078), (194, 97570), (220, 86039), (388, 48785), (485, 39028), (887, 21340), (970, 19514), (1067, 17740), (1774, 10670), (1940, 9757), (2134, 8870), (3548, 5335), (4268, 4435)]