21378810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{10037}}^1$

素因数の和:10118

約数の個数: 32

約数和(自身を含む): 52036992

約数和(自身を除く): 30658182

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 142, 213, 355, 426, 710, 1065, 2130, 10037, 20074, 30111, 50185, 60222, 100370, 150555, 301110, 712627, 1425254, 2137881, 3563135, 4275762, 7126270, 10689405, 21378810]

約数ペア:

[(1, 21378810), (2, 10689405), (3, 7126270), (5, 4275762), (6, 3563135), (10, 2137881), (15, 1425254), (30, 712627), (71, 301110), (142, 150555), (213, 100370), (355, 60222), (426, 50185), (710, 30111), (1065, 20074), (2130, 10037)]