21001845

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32561}}^1$

素因数の和:32612

約数の個数: 16

約数和(自身を含む): 34385472

約数和(自身を除く): 13383627

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32561, 97683, 162805, 488415, 1400123, 4200369, 7000615, 21001845]

約数ペア:

[(1, 21001845), (3, 7000615), (5, 4200369), (15, 1400123), (43, 488415), (129, 162805), (215, 97683), (645, 32561)]