18727780

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^2\times {\mathrm{269}}^1$

素因数の和:396

約数の個数: 36

約数和(自身を含む): 40154940

約数和(自身を除く): 21427160

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 269, 295, 538, 590, 1076, 1180, 1345, 2690, 3481, 5380, 6962, 13924, 15871, 17405, 31742, 34810, 63484, 69620, 79355, 158710, 317420, 936389, 1872778, 3745556, 4681945, 9363890, 18727780]

約数ペア:

[(1, 18727780), (2, 9363890), (4, 4681945), (5, 3745556), (10, 1872778), (20, 936389), (59, 317420), (118, 158710), (236, 79355), (269, 69620), (295, 63484), (538, 34810), (590, 31742), (1076, 17405), (1180, 15871), (1345, 13924), (2690, 6962), (3481, 5380)]