28961025

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 50758656

約数和(自身を除く): 21797631

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 103, 115, 163, 309, 345, 489, 515, 575, 815, 1545, 1725, 2369, 2445, 2575, 3749, 4075, 7107, 7725, 11247, 11845, 12225, 16789, 18745, 35535, 50367, 56235, 59225, 83945, 93725, 177675, 251835, 281175, 386147, 419725, 1158441, 1259175, 1930735, 5792205, 9653675, 28961025]

約数ペア:

[(1, 28961025), (3, 9653675), (5, 5792205), (15, 1930735), (23, 1259175), (25, 1158441), (69, 419725), (75, 386147), (103, 281175), (115, 251835), (163, 177675), (309, 93725), (345, 83945), (489, 59225), (515, 56235), (575, 50367), (815, 35535), (1545, 18745), (1725, 16789), (2369, 12225), (2445, 11845), (2575, 11247), (3749, 7725), (4075, 7107)]