17212095

素因数分解:

$3^4\times 5^1\times {\mathrm{42499}}^1$

素因数の和:42516

約数の個数: 20

約数和(自身を含む): 30855000

約数和(自身を除く): 13642905

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 42499, 127497, 212495, 382491, 637485, 1147473, 1912455, 3442419, 5737365, 17212095]

約数ペア:

[(1, 17212095), (3, 5737365), (5, 3442419), (9, 1912455), (15, 1147473), (27, 637485), (45, 382491), (81, 212495), (135, 127497), (405, 42499)]