21317945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{1117}}^1$

素因数の和:1480

約数の個数: 16

約数和(自身を含む): 28012608

約数和(自身を除く): 6694663

約数列:

[1, 5, 11, 55, 347, 1117, 1735, 3817, 5585, 12287, 19085, 61435, 387599, 1937995, 4263589, 21317945]

約数ペア:

[(1, 21317945), (5, 4263589), (11, 1937995), (55, 387599), (347, 61435), (1117, 19085), (1735, 12287), (3817, 5585)]