21975667

素因数分解:

$7^3\times {\mathrm{79}}^1\times {\mathrm{811}}^1$

素因数の和:911

約数の個数: 16

約数和(自身を含む): 25984000

約数和(自身を除く): 4008333

約数列:

[1, 7, 49, 79, 343, 553, 811, 3871, 5677, 27097, 39739, 64069, 278173, 448483, 3139381, 21975667]

約数ペア:

[(1, 21975667), (7, 3139381), (49, 448483), (79, 278173), (343, 64069), (553, 39739), (811, 27097), (3871, 5677)]