19947495

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{12911}}^1$

素因数の和:13022

約数の個数: 16

約数和(自身を含む): 32228352

約数和(自身を除く): 12280857

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 12911, 38733, 64555, 193665, 1329833, 3989499, 6649165, 19947495]

約数ペア:

[(1, 19947495), (3, 6649165), (5, 3989499), (15, 1329833), (103, 193665), (309, 64555), (515, 38733), (1545, 12911)]