20758870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{653}}^1$

素因数の和:705

約数の個数: 48

約数和(自身を含む): 43368048

約数和(自身を除く): 22609178

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 289, 374, 578, 653, 935, 1306, 1445, 1870, 2890, 3179, 3265, 6358, 6530, 7183, 11101, 14366, 15895, 22202, 31790, 35915, 55505, 71830, 111010, 122111, 188717, 244222, 377434, 610555, 943585, 1221110, 1887170, 2075887, 4151774, 10379435, 20758870]

約数ペア:

[(1, 20758870), (2, 10379435), (5, 4151774), (10, 2075887), (11, 1887170), (17, 1221110), (22, 943585), (34, 610555), (55, 377434), (85, 244222), (110, 188717), (170, 122111), (187, 111010), (289, 71830), (374, 55505), (578, 35915), (653, 31790), (935, 22202), (1306, 15895), (1445, 14366), (1870, 11101), (2890, 7183), (3179, 6530), (3265, 6358)]