81272795

素因数分解:

$5^1\times {\mathrm{43}}^2\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 102222000

約数和(自身を除く): 20949205

約数列:

[1, 5, 43, 59, 149, 215, 295, 745, 1849, 2537, 6407, 8791, 9245, 12685, 32035, 43955, 109091, 275501, 378013, 545455, 1377505, 1890065, 16254559, 81272795]

約数ペア:

[(1, 81272795), (5, 16254559), (43, 1890065), (59, 1377505), (149, 545455), (215, 378013), (295, 275501), (745, 109091), (1849, 43955), (2537, 32035), (6407, 12685), (8791, 9245)]