21399952

素因数分解:

$2^4\times 7^1\times {\mathrm{191071}}^1$

素因数の和:191086

約数の個数: 20

約数和(自身を含む): 47385856

約数和(自身を除く): 25985904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 191071, 382142, 764284, 1337497, 1528568, 2674994, 3057136, 5349988, 10699976, 21399952]

約数ペア:

[(1, 21399952), (2, 10699976), (4, 5349988), (7, 3057136), (8, 2674994), (14, 1528568), (16, 1337497), (28, 764284), (56, 382142), (112, 191071)]