21005090

素因数分解:

$2^1\times 5^1\times {\mathrm{359}}^1\times {\mathrm{5851}}^1$

素因数の和:6217

約数の個数: 16

約数和(自身を含む): 37920960

約数和(自身を除く): 16915870

約数列:

[1, 2, 5, 10, 359, 718, 1795, 3590, 5851, 11702, 29255, 58510, 2100509, 4201018, 10502545, 21005090]

約数ペア:

[(1, 21005090), (2, 10502545), (5, 4201018), (10, 2100509), (359, 58510), (718, 29255), (1795, 11702), (3590, 5851)]