20289190

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65449}}^1$

素因数の和:65487

約数の個数: 16

約数和(自身を含む): 37699200

約数和(自身を除く): 17410010

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 65449, 130898, 327245, 654490, 2028919, 4057838, 10144595, 20289190]

約数ペア:

[(1, 20289190), (2, 10144595), (5, 4057838), (10, 2028919), (31, 654490), (62, 327245), (155, 130898), (310, 65449)]