290470310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{72077}}^1$

素因数の和:72128

約数の個数: 32

約数和(自身を含む): 581236992

約数和(自身を除く): 290766682

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 72077, 144154, 360385, 720770, 937001, 1874002, 2234387, 4468774, 4685005, 9370010, 11171935, 22343870, 29047031, 58094062, 145235155, 290470310]

約数ペア:

[(1, 290470310), (2, 145235155), (5, 58094062), (10, 29047031), (13, 22343870), (26, 11171935), (31, 9370010), (62, 4685005), (65, 4468774), (130, 2234387), (155, 1874002), (310, 937001), (403, 720770), (806, 360385), (2015, 144154), (4030, 72077)]