21270431

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5701}}^1$

素因数の和:5762

約数の個数: 16

約数和(自身を含む): 26822208

約数和(自身を除く): 5551777

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5701, 39907, 74113, 233741, 518791, 1636187, 3038633, 21270431]

約数ペア:

[(1, 21270431), (7, 3038633), (13, 1636187), (41, 518791), (91, 233741), (287, 74113), (533, 39907), (3731, 5701)]