18886905

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4513}}^1$

素因数の和:4558

約数の個数: 32

約数和(自身を含む): 34667520

約数和(自身を除く): 15780615

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 4513, 13539, 22565, 40617, 67695, 121851, 139903, 203085, 419709, 609255, 699515, 1259127, 2098545, 3777381, 6295635, 18886905]

約数ペア:

[(1, 18886905), (3, 6295635), (5, 3777381), (9, 2098545), (15, 1259127), (27, 699515), (31, 609255), (45, 419709), (93, 203085), (135, 139903), (155, 121851), (279, 67695), (465, 40617), (837, 22565), (1395, 13539), (4185, 4513)]