309820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2213}}^1$

素因数の和:2229

約数の個数: 24

約数和(自身を含む): 743904

約数和(自身を除く): 434084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2213, 4426, 8852, 11065, 15491, 22130, 30982, 44260, 61964, 77455, 154910, 309820]

約数ペア:

[(1, 309820), (2, 154910), (4, 77455), (5, 61964), (7, 44260), (10, 30982), (14, 22130), (20, 15491), (28, 11065), (35, 8852), (70, 4426), (140, 2213)]