81174990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{208141}}^1$

素因数の和:208164

約数の個数: 32

約数和(自身を含む): 209807136

約数和(自身を除く): 128632146

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 208141, 416282, 624423, 1040705, 1248846, 2081410, 2705833, 3122115, 5411666, 6244230, 8117499, 13529165, 16234998, 27058330, 40587495, 81174990]

約数ペア:

[(1, 81174990), (2, 40587495), (3, 27058330), (5, 16234998), (6, 13529165), (10, 8117499), (13, 6244230), (15, 5411666), (26, 3122115), (30, 2705833), (39, 2081410), (65, 1248846), (78, 1040705), (130, 624423), (195, 416282), (390, 208141)]