18861020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1049}}^1$

素因数の和:1118

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 23474980

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1049, 1798, 2098, 3596, 4196, 4495, 5245, 8990, 10490, 17980, 20980, 30421, 32519, 60842, 65038, 121684, 130076, 152105, 162595, 304210, 325190, 608420, 650380, 943051, 1886102, 3772204, 4715255, 9430510, 18861020]

約数ペア:

[(1, 18861020), (2, 9430510), (4, 4715255), (5, 3772204), (10, 1886102), (20, 943051), (29, 650380), (31, 608420), (58, 325190), (62, 304210), (116, 162595), (124, 152105), (145, 130076), (155, 121684), (290, 65038), (310, 60842), (580, 32519), (620, 30421), (899, 20980), (1049, 17980), (1798, 10490), (2098, 8990), (3596, 5245), (4196, 4495)]