820805360

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{74891}}^1$

素因数の和:75041

約数の個数: 40

約数和(自身を含む): 1922327856

約数和(自身を除く): 1101522496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 2192, 2740, 5480, 10960, 74891, 149782, 299564, 374455, 599128, 748910, 1198256, 1497820, 2995640, 5991280, 10260067, 20520134, 41040268, 51300335, 82080536, 102600670, 164161072, 205201340, 410402680, 820805360]

約数ペア:

[(1, 820805360), (2, 410402680), (4, 205201340), (5, 164161072), (8, 102600670), (10, 82080536), (16, 51300335), (20, 41040268), (40, 20520134), (80, 10260067), (137, 5991280), (274, 2995640), (548, 1497820), (685, 1198256), (1096, 748910), (1370, 599128), (2192, 374455), (2740, 299564), (5480, 149782), (10960, 74891)]