21673460

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15263}}^1$

素因数の和:15343

約数の個数: 24

約数和(自身を含む): 46158336

約数和(自身を除く): 24484876

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 15263, 30526, 61052, 76315, 152630, 305260, 1083673, 2167346, 4334692, 5418365, 10836730, 21673460]

約数ペア:

[(1, 21673460), (2, 10836730), (4, 5418365), (5, 4334692), (10, 2167346), (20, 1083673), (71, 305260), (142, 152630), (284, 76315), (355, 61052), (710, 30526), (1420, 15263)]