13249375

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:109

約数の個数: 40

約数和(自身を含む): 18556560

約数和(自身を除く): 5307185

約数列:

[1, 5, 17, 25, 29, 43, 85, 125, 145, 215, 425, 493, 625, 725, 731, 1075, 1247, 2125, 2465, 3625, 3655, 5375, 6235, 10625, 12325, 18125, 18275, 21199, 26875, 31175, 61625, 91375, 105995, 155875, 308125, 456875, 529975, 779375, 2649875, 13249375]

約数ペア:

[(1, 13249375), (5, 2649875), (17, 779375), (25, 529975), (29, 456875), (43, 308125), (85, 155875), (125, 105995), (145, 91375), (215, 61625), (425, 31175), (493, 26875), (625, 21199), (725, 18275), (731, 18125), (1075, 12325), (1247, 10625), (2125, 6235), (2465, 5375), (3625, 3655)]