20675468

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 42311808

約数和(自身を除く): 21636340

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 131, 187, 211, 262, 374, 422, 524, 748, 844, 1441, 2227, 2321, 2882, 3587, 4454, 4642, 5764, 7174, 8908, 9284, 14348, 24497, 27641, 39457, 48994, 55282, 78914, 97988, 110564, 157828, 304051, 469897, 608102, 939794, 1216204, 1879588, 5168867, 10337734, 20675468]

約数ペア:

[(1, 20675468), (2, 10337734), (4, 5168867), (11, 1879588), (17, 1216204), (22, 939794), (34, 608102), (44, 469897), (68, 304051), (131, 157828), (187, 110564), (211, 97988), (262, 78914), (374, 55282), (422, 48994), (524, 39457), (748, 27641), (844, 24497), (1441, 14348), (2227, 9284), (2321, 8908), (2882, 7174), (3587, 5764), (4454, 4642)]