81445640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{119773}}^1$

素因数の和:119801

約数の個数: 32

約数和(自身を含む): 194033880

約数和(自身を除く): 112588240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 119773, 239546, 479092, 598865, 958184, 1197730, 2036141, 2395460, 4072282, 4790920, 8144564, 10180705, 16289128, 20361410, 40722820, 81445640]

約数ペア:

[(1, 81445640), (2, 40722820), (4, 20361410), (5, 16289128), (8, 10180705), (10, 8144564), (17, 4790920), (20, 4072282), (34, 2395460), (40, 2036141), (68, 1197730), (85, 958184), (136, 598865), (170, 479092), (340, 239546), (680, 119773)]