18159975

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1877}}^1$

素因数の和:1936

約数の個数: 36

約数和(自身を含む): 33300696

約数和(自身を除く): 15140721

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1877, 1935, 3225, 5631, 9385, 9675, 16893, 28155, 46925, 80711, 84465, 140775, 242133, 403555, 422325, 726399, 1210665, 2017775, 3631995, 6053325, 18159975]

約数ペア:

[(1, 18159975), (3, 6053325), (5, 3631995), (9, 2017775), (15, 1210665), (25, 726399), (43, 422325), (45, 403555), (75, 242133), (129, 140775), (215, 84465), (225, 80711), (387, 46925), (645, 28155), (1075, 16893), (1877, 9675), (1935, 9385), (3225, 5631)]