20810937

素因数分解:

$3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{2113}}^1$

素因数の和:2197

約数の個数: 24

約数和(自身を含む): 32775456

約数和(自身を除く): 11964519

約数列:

[1, 3, 7, 21, 49, 67, 147, 201, 469, 1407, 2113, 3283, 6339, 9849, 14791, 44373, 103537, 141571, 310611, 424713, 990997, 2972991, 6936979, 20810937]

約数ペア:

[(1, 20810937), (3, 6936979), (7, 2972991), (21, 990997), (49, 424713), (67, 310611), (147, 141571), (201, 103537), (469, 44373), (1407, 14791), (2113, 9849), (3283, 6339)]