19689465

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6221}}^1$

素因数の和:6440

約数の個数: 16

約数和(自身を含む): 31657536

約数和(自身を除く): 11968071

約数列:

[1, 3, 5, 15, 211, 633, 1055, 3165, 6221, 18663, 31105, 93315, 1312631, 3937893, 6563155, 19689465]

約数ペア:

[(1, 19689465), (3, 6563155), (5, 3937893), (15, 1312631), (211, 93315), (633, 31105), (1055, 18663), (3165, 6221)]