21702105

素因数分解:

$3^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1151}}^1$

素因数の和:1581

約数の個数: 24

約数和(自身を含む): 37739520

約数和(自身を除く): 16037415

約数列:

[1, 3, 5, 9, 15, 45, 419, 1151, 1257, 2095, 3453, 3771, 5755, 6285, 10359, 17265, 18855, 51795, 482269, 1446807, 2411345, 4340421, 7234035, 21702105]

約数ペア:

[(1, 21702105), (3, 7234035), (5, 4340421), (9, 2411345), (15, 1446807), (45, 482269), (419, 51795), (1151, 18855), (1257, 17265), (2095, 10359), (3453, 6285), (3771, 5755)]