20178896980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5395427}}^1$

素因数の和:5395464

約数の個数: 48

約数和(自身を含む): 48947322816

約数和(自身を除く): 28768425836

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5395427, 10790854, 21581708, 26977135, 53954270, 59349697, 91722259, 107908540, 118699394, 183444518, 237398788, 296748485, 366889036, 458611295, 593496970, 917222590, 1008944849, 1186993940, 1834445180, 2017889698, 4035779396, 5044724245, 10089448490, 20178896980]

約数ペア:

[(1, 20178896980), (2, 10089448490), (4, 5044724245), (5, 4035779396), (10, 2017889698), (11, 1834445180), (17, 1186993940), (20, 1008944849), (22, 917222590), (34, 593496970), (44, 458611295), (55, 366889036), (68, 296748485), (85, 237398788), (110, 183444518), (170, 118699394), (187, 107908540), (220, 91722259), (340, 59349697), (374, 53954270), (748, 26977135), (935, 21581708), (1870, 10790854), (3740, 5395427)]