21387070

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 39525408

約数和(自身を除く): 18138338

約数列:

[1, 2, 5, 10, 67, 134, 137, 233, 274, 335, 466, 670, 685, 1165, 1370, 2330, 9179, 15611, 18358, 31222, 31921, 45895, 63842, 78055, 91790, 156110, 159605, 319210, 2138707, 4277414, 10693535, 21387070]

約数ペア:

[(1, 21387070), (2, 10693535), (5, 4277414), (10, 2138707), (67, 319210), (134, 159605), (137, 156110), (233, 91790), (274, 78055), (335, 63842), (466, 45895), (670, 31921), (685, 31222), (1165, 18358), (1370, 15611), (2330, 9179)]