18721220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{133723}}^1$

素因数の和:133739

約数の個数: 24

約数和(自身を含む): 44931264

約数和(自身を除く): 26210044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 133723, 267446, 534892, 668615, 936061, 1337230, 1872122, 2674460, 3744244, 4680305, 9360610, 18721220]

約数ペア:

[(1, 18721220), (2, 9360610), (4, 4680305), (5, 3744244), (7, 2674460), (10, 1872122), (14, 1337230), (20, 936061), (28, 668615), (35, 534892), (70, 267446), (140, 133723)]