20199855

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1459}}^1$

素因数の和:1551

約数の個数: 32

約数和(自身を含む): 35320320

約数和(自身を除く): 15120465

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 195, 213, 355, 923, 1065, 1459, 2769, 4377, 4615, 7295, 13845, 18967, 21885, 56901, 94835, 103589, 284505, 310767, 517945, 1346657, 1553835, 4039971, 6733285, 20199855]

約数ペア:

[(1, 20199855), (3, 6733285), (5, 4039971), (13, 1553835), (15, 1346657), (39, 517945), (65, 310767), (71, 284505), (195, 103589), (213, 94835), (355, 56901), (923, 21885), (1065, 18967), (1459, 13845), (2769, 7295), (4377, 4615)]