68819620

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{8581}}^1$

素因数の和:8991

約数の個数: 24

約数和(自身を含む): 144898488

約数和(自身を除く): 76078868

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 8581, 17162, 34324, 42905, 85810, 171620, 3440981, 6881962, 13763924, 17204905, 34409810, 68819620]

約数ペア:

[(1, 68819620), (2, 34409810), (4, 17204905), (5, 13763924), (10, 6881962), (20, 3440981), (401, 171620), (802, 85810), (1604, 42905), (2005, 34324), (4010, 17162), (8020, 8581)]