21151190

素因数分解:

$2^1\times 5^1\times {\mathrm{839}}^1\times {\mathrm{2521}}^1$

素因数の和:3367

約数の個数: 16

約数和(自身を含む): 38132640

約数和(自身を除く): 16981450

約数列:

[1, 2, 5, 10, 839, 1678, 2521, 4195, 5042, 8390, 12605, 25210, 2115119, 4230238, 10575595, 21151190]

約数ペア:

[(1, 21151190), (2, 10575595), (5, 4230238), (10, 2115119), (839, 25210), (1678, 12605), (2521, 8390), (4195, 5042)]