20999865

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{45161}}^1$

素因数の和:45200

約数の個数: 16

約数和(自身を含む): 34684416

約数和(自身を除く): 13684551

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 45161, 135483, 225805, 677415, 1399991, 4199973, 6999955, 20999865]

約数ペア:

[(1, 20999865), (3, 6999955), (5, 4199973), (15, 1399991), (31, 677415), (93, 225805), (155, 135483), (465, 45161)]