21172465

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{967}}^1$

素因数の和:1152

約数の個数: 16

約数和(自身を含む): 26484480

約数和(自身を除く): 5312015

約数列:

[1, 5, 29, 145, 151, 755, 967, 4379, 4835, 21895, 28043, 140215, 146017, 730085, 4234493, 21172465]

約数ペア:

[(1, 21172465), (5, 4234493), (29, 730085), (145, 146017), (151, 140215), (755, 28043), (967, 21895), (4379, 4835)]