21217830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{707261}}^1$

素因数の和:707271

約数の個数: 16

約数和(自身を含む): 50922864

約数和(自身を除く): 29705034

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 707261, 1414522, 2121783, 3536305, 4243566, 7072610, 10608915, 21217830]

約数ペア:

[(1, 21217830), (2, 10608915), (3, 7072610), (5, 4243566), (6, 3536305), (10, 2121783), (15, 1414522), (30, 707261)]