81644390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{263369}}^1$

素因数の和:263407

約数の個数: 16

約数和(自身を含む): 151701120

約数和(自身を除く): 70056730

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 263369, 526738, 1316845, 2633690, 8164439, 16328878, 40822195, 81644390]

約数ペア:

[(1, 81644390), (2, 40822195), (5, 16328878), (10, 8164439), (31, 2633690), (62, 1316845), (155, 526738), (310, 263369)]