81006280

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{69833}}^1$

素因数の和:69873

約数の個数: 32

約数和(自身を含む): 188551800

約数和(自身を除く): 107545520

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 69833, 139666, 279332, 349165, 558664, 698330, 1396660, 2025157, 2793320, 4050314, 8100628, 10125785, 16201256, 20251570, 40503140, 81006280]

約数ペア:

[(1, 81006280), (2, 40503140), (4, 20251570), (5, 16201256), (8, 10125785), (10, 8100628), (20, 4050314), (29, 2793320), (40, 2025157), (58, 1396660), (116, 698330), (145, 558664), (232, 349165), (290, 279332), (580, 139666), (1160, 69833)]