21231027

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:467

約数の個数: 24

約数和(自身を含む): 31473936

約数和(自身を除く): 10242909

約数列:

[1, 3, 9, 67, 137, 201, 257, 411, 603, 771, 1233, 2313, 9179, 17219, 27537, 35209, 51657, 82611, 105627, 154971, 316881, 2359003, 7077009, 21231027]

約数ペア:

[(1, 21231027), (3, 7077009), (9, 2359003), (67, 316881), (137, 154971), (201, 105627), (257, 82611), (411, 51657), (603, 35209), (771, 27537), (1233, 17219), (2313, 9179)]