18131240

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4673}}^1$

素因数の和:4781

約数の個数: 32

約数和(自身を含む): 41224680

約数和(自身を除く): 23093440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4673, 9346, 18692, 23365, 37384, 46730, 93460, 186920, 453281, 906562, 1813124, 2266405, 3626248, 4532810, 9065620, 18131240]

約数ペア:

[(1, 18131240), (2, 9065620), (4, 4532810), (5, 3626248), (8, 2266405), (10, 1813124), (20, 906562), (40, 453281), (97, 186920), (194, 93460), (388, 46730), (485, 37384), (776, 23365), (970, 18692), (1940, 9346), (3880, 4673)]