21312678

素因数分解:

$2^1\times 3^1\times {\mathrm{53}}^1\times {\mathrm{67021}}^1$

素因数の和:67079

約数の個数: 16

約数和(自身を含む): 43430256

約数和(自身を除く): 22117578

約数列:

[1, 2, 3, 6, 53, 106, 159, 318, 67021, 134042, 201063, 402126, 3552113, 7104226, 10656339, 21312678]

約数ペア:

[(1, 21312678), (2, 10656339), (3, 7104226), (6, 3552113), (53, 402126), (106, 201063), (159, 134042), (318, 67021)]