81274275

素因数分解:

$3^2\times 5^2\times {\mathrm{361219}}^1$

素因数の和:361235

約数の個数: 18

約数和(自身を含む): 145571660

約数和(自身を除く): 64297385

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 361219, 1083657, 1806095, 3250971, 5418285, 9030475, 16254855, 27091425, 81274275]

約数ペア:

[(1, 81274275), (3, 27091425), (5, 16254855), (9, 9030475), (15, 5418285), (25, 3250971), (45, 1806095), (75, 1083657), (225, 361219)]