20129540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32467}}^1$

素因数の和:32507

約数の個数: 24

約数和(自身を含む): 43636992

約数和(自身を除く): 23507452

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32467, 64934, 129868, 162335, 324670, 649340, 1006477, 2012954, 4025908, 5032385, 10064770, 20129540]

約数ペア:

[(1, 20129540), (2, 10064770), (4, 5032385), (5, 4025908), (10, 2012954), (20, 1006477), (31, 649340), (62, 324670), (124, 162335), (155, 129868), (310, 64934), (620, 32467)]