81472940

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{7789}}^1$

素因数の和:8321

約数の個数: 24

約数和(自身を含む): 171442320

約数和(自身を除く): 89969380

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 2092, 2615, 5230, 7789, 10460, 15578, 31156, 38945, 77890, 155780, 4073647, 8147294, 16294588, 20368235, 40736470, 81472940]

約数ペア:

[(1, 81472940), (2, 40736470), (4, 20368235), (5, 16294588), (10, 8147294), (20, 4073647), (523, 155780), (1046, 77890), (2092, 38945), (2615, 31156), (5230, 15578), (7789, 10460)]