19900455

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{78041}}^1$

素因数の和:78066

約数の個数: 16

約数和(自身を含む): 33714144

約数和(自身を除く): 13813689

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 78041, 234123, 390205, 1170615, 1326697, 3980091, 6633485, 19900455]

約数ペア:

[(1, 19900455), (3, 6633485), (5, 3980091), (15, 1326697), (17, 1170615), (51, 390205), (85, 234123), (255, 78041)]