18186791

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:263

約数の個数: 24

約数和(自身を含む): 22161600

約数和(自身を除く): 3974809

約数列:

[1, 7, 47, 49, 53, 149, 329, 371, 1043, 2303, 2491, 2597, 7003, 7301, 7897, 17437, 49021, 55279, 122059, 343147, 371159, 386953, 2598113, 18186791]

約数ペア:

[(1, 18186791), (7, 2598113), (47, 386953), (49, 371159), (53, 343147), (149, 122059), (329, 55279), (371, 49021), (1043, 17437), (2303, 7897), (2491, 7301), (2597, 7003)]