216638401

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{3919}}^1$

素因数の和:4128

約数の個数: 16

約数和(自身を含む): 254016000

約数和(自身を除く): 37377599

約数列:

[1, 7, 53, 149, 371, 1043, 3919, 7897, 27433, 55279, 207707, 583931, 1453949, 4087517, 30948343, 216638401]

約数ペア:

[(1, 216638401), (7, 30948343), (53, 4087517), (149, 1453949), (371, 583931), (1043, 207707), (3919, 55279), (7897, 27433)]