21296205

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67607}}^1$

素因数の和:67625

約数の個数: 24

約数和(自身を含む): 42187392

約数和(自身を除く): 20891187

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67607, 202821, 338035, 473249, 608463, 1014105, 1419747, 2366245, 3042315, 4259241, 7098735, 21296205]

約数ペア:

[(1, 21296205), (3, 7098735), (5, 4259241), (7, 3042315), (9, 2366245), (15, 1419747), (21, 1014105), (35, 608463), (45, 473249), (63, 338035), (105, 202821), (315, 67607)]