9817880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3457}}^1$

素因数の和:3539

約数の個数: 32

約数和(自身を含む): 22407840

約数和(自身を除く): 12589960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 3457, 6914, 13828, 17285, 27656, 34570, 69140, 138280, 245447, 490894, 981788, 1227235, 1963576, 2454470, 4908940, 9817880]

約数ペア:

[(1, 9817880), (2, 4908940), (4, 2454470), (5, 1963576), (8, 1227235), (10, 981788), (20, 490894), (40, 245447), (71, 138280), (142, 69140), (284, 34570), (355, 27656), (568, 17285), (710, 13828), (1420, 6914), (2840, 3457)]