20121520307

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{912251}}^1$

素因数の和:912418

約数の個数: 16

約数和(自身を含む): 24171028992

約数和(自身を除く): 4049508685

約数列:

[1, 7, 23, 137, 161, 959, 3151, 22057, 912251, 6385757, 20981773, 124978387, 146872411, 874848709, 2874502901, 20121520307]

約数ペア:

[(1, 20121520307), (7, 2874502901), (23, 874848709), (137, 146872411), (161, 124978387), (959, 20981773), (3151, 6385757), (22057, 912251)]