1389975

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 2356992

約数和(自身を除く): 967017

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 431, 645, 1075, 1293, 2155, 3225, 6465, 10775, 18533, 32325, 55599, 92665, 277995, 463325, 1389975]

約数ペア:

[(1, 1389975), (3, 463325), (5, 277995), (15, 92665), (25, 55599), (43, 32325), (75, 18533), (129, 10775), (215, 6465), (431, 3225), (645, 2155), (1075, 1293)]