16661990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{40639}}^1$

素因数の和:40687

約数の個数: 16

約数和(自身を含む): 30723840

約数和(自身を除く): 14061850

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 40639, 81278, 203195, 406390, 1666199, 3332398, 8330995, 16661990]

約数ペア:

[(1, 16661990), (2, 8330995), (5, 3332398), (10, 1666199), (41, 406390), (82, 203195), (205, 81278), (410, 40639)]