21319725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{40609}}^1$

素因数の和:40629

約数の個数: 24

約数和(自身を含む): 40285120

約数和(自身を除く): 18965395

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 40609, 121827, 203045, 284263, 609135, 852789, 1015225, 1421315, 3045675, 4263945, 7106575, 21319725]

約数ペア:

[(1, 21319725), (3, 7106575), (5, 4263945), (7, 3045675), (15, 1421315), (21, 1015225), (25, 852789), (35, 609135), (75, 284263), (105, 203045), (175, 121827), (525, 40609)]