19884615

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{18671}}^1$

素因数の和:18750

約数の個数: 16

約数和(自身を含む): 32265216

約数和(自身を除く): 12380601

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 18671, 56013, 93355, 280065, 1325641, 3976923, 6628205, 19884615]

約数ペア:

[(1, 19884615), (3, 6628205), (5, 3976923), (15, 1325641), (71, 280065), (213, 93355), (355, 56013), (1065, 18671)]