15780490065

素因数分解:

$3^4\times 5^1\times {\mathrm{38964173}}^1$

素因数の和:38964190

約数の個数: 20

約数和(自身を含む): 28287990324

約数和(自身を除く): 12507500259

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 38964173, 116892519, 194820865, 350677557, 584462595, 1052032671, 1753387785, 3156098013, 5260163355, 15780490065]

約数ペア:

[(1, 15780490065), (3, 5260163355), (5, 3156098013), (9, 1753387785), (15, 1052032671), (27, 584462595), (45, 350677557), (81, 194820865), (135, 116892519), (405, 38964173)]