28189655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 39118464

約数和(自身を除く): 10928809

約数列:

[1, 5, 13, 17, 65, 85, 97, 221, 263, 485, 1105, 1261, 1315, 1649, 3419, 4471, 6305, 8245, 17095, 21437, 22355, 25511, 58123, 107185, 127555, 290615, 331643, 433687, 1658215, 2168435, 5637931, 28189655]

約数ペア:

[(1, 28189655), (5, 5637931), (13, 2168435), (17, 1658215), (65, 433687), (85, 331643), (97, 290615), (221, 127555), (263, 107185), (485, 58123), (1105, 25511), (1261, 22355), (1315, 21437), (1649, 17095), (3419, 8245), (4471, 6305)]