668421

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 1081080

約数和(自身を除く): 412659

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 197, 261, 377, 591, 1131, 1773, 2561, 3393, 5713, 7683, 17139, 23049, 51417, 74269, 222807, 668421]

約数ペア:

[(1, 668421), (3, 222807), (9, 74269), (13, 51417), (29, 23049), (39, 17139), (87, 7683), (117, 5713), (197, 3393), (261, 2561), (377, 1773), (591, 1131)]