80490700

素因数分解:

$2^2\times 5^2\times {\mathrm{181}}^1\times {\mathrm{4447}}^1$

素因数の和:4642

約数の個数: 36

約数和(自身を含む): 175669312

約数和(自身を除く): 95178612

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 181, 362, 724, 905, 1810, 3620, 4447, 4525, 8894, 9050, 17788, 18100, 22235, 44470, 88940, 111175, 222350, 444700, 804907, 1609814, 3219628, 4024535, 8049070, 16098140, 20122675, 40245350, 80490700]

約数ペア:

[(1, 80490700), (2, 40245350), (4, 20122675), (5, 16098140), (10, 8049070), (20, 4024535), (25, 3219628), (50, 1609814), (100, 804907), (181, 444700), (362, 222350), (724, 111175), (905, 88940), (1810, 44470), (3620, 22235), (4447, 18100), (4525, 17788), (8894, 9050)]