21418263

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{4639}}^1$

素因数の和:4673

約数の個数: 24

約数和(自身を含む): 33779200

約数和(自身を除く): 12360937

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 4617, 4639, 13917, 41751, 88141, 125253, 264423, 375759, 793269, 1127277, 2379807, 7139421, 21418263]

約数ペア:

[(1, 21418263), (3, 7139421), (9, 2379807), (19, 1127277), (27, 793269), (57, 375759), (81, 264423), (171, 125253), (243, 88141), (513, 41751), (1539, 13917), (4617, 4639)]