21000325647

素因数分解:

$3^1\times 7^1\times {\mathrm{1523}}^1\times {\mathrm{656609}}^1$

素因数の和:658142

約数の個数: 16

約数和(自身を含む): 32021556480

約数和(自身を除く): 11021230833

約数列:

[1, 3, 7, 21, 1523, 4569, 10661, 31983, 656609, 1969827, 4596263, 13788789, 1000015507, 3000046521, 7000108549, 21000325647]

約数ペア:

[(1, 21000325647), (3, 7000108549), (7, 3000046521), (21, 1000015507), (1523, 13788789), (4569, 4596263), (10661, 1969827), (31983, 656609)]