20975265

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16073}}^1$

素因数の和:16113

約数の個数: 24

約数和(自身を含む): 37613160

約数和(自身を除く): 16637895

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 16073, 48219, 80365, 144657, 241095, 466117, 723285, 1398351, 2330585, 4195053, 6991755, 20975265]

約数ペア:

[(1, 20975265), (3, 6991755), (5, 4195053), (9, 2330585), (15, 1398351), (29, 723285), (45, 466117), (87, 241095), (145, 144657), (261, 80365), (435, 48219), (1305, 16073)]