21063693

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{27109}}^1$

素因数の和:27156

約数の個数: 16

約数和(自身を含む): 32965760

約数和(自身を除く): 11902067

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 27109, 81327, 189763, 569289, 1003033, 3009099, 7021231, 21063693]

約数ペア:

[(1, 21063693), (3, 7021231), (7, 3009099), (21, 1003033), (37, 569289), (111, 189763), (259, 81327), (777, 27109)]