20286175

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{241}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 31928512

約数和(自身を除く): 11642337

約数列:

[1, 5, 7, 13, 25, 35, 37, 65, 91, 175, 185, 241, 259, 325, 455, 481, 925, 1205, 1295, 1687, 2275, 2405, 3133, 3367, 6025, 6475, 8435, 8917, 12025, 15665, 16835, 21931, 42175, 44585, 62419, 78325, 84175, 109655, 115921, 222925, 312095, 548275, 579605, 811447, 1560475, 2898025, 4057235, 20286175]

約数ペア:

[(1, 20286175), (5, 4057235), (7, 2898025), (13, 1560475), (25, 811447), (35, 579605), (37, 548275), (65, 312095), (91, 222925), (175, 115921), (185, 109655), (241, 84175), (259, 78325), (325, 62419), (455, 44585), (481, 42175), (925, 21931), (1205, 16835), (1295, 15665), (1687, 12025), (2275, 8917), (2405, 8435), (3133, 6475), (3367, 6025)]