15561621

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 23104224

約数和(自身を除く): 7542603

約数列:

[1, 3, 9, 67, 131, 197, 201, 393, 591, 603, 1179, 1773, 8777, 13199, 25807, 26331, 39597, 77421, 78993, 118791, 232263, 1729069, 5187207, 15561621]

約数ペア:

[(1, 15561621), (3, 5187207), (9, 1729069), (67, 232263), (131, 118791), (197, 78993), (201, 77421), (393, 39597), (591, 26331), (603, 25807), (1179, 13199), (1773, 8777)]