21608985

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{75821}}^1$

素因数の和:75848

約数の個数: 16

約数和(自身を含む): 36394560

約数和(自身を除く): 14785575

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 75821, 227463, 379105, 1137315, 1440599, 4321797, 7202995, 21608985]

約数ペア:

[(1, 21608985), (3, 7202995), (5, 4321797), (15, 1440599), (19, 1137315), (57, 379105), (95, 227463), (285, 75821)]