20705152

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{541}}^1$

素因数の和:591

約数の個数: 64

約数和(自身を含む): 46438560

約数和(自身を除く): 25733408

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 32, 46, 52, 64, 92, 104, 128, 184, 208, 299, 368, 416, 541, 598, 736, 832, 1082, 1196, 1472, 1664, 2164, 2392, 2944, 4328, 4784, 7033, 8656, 9568, 12443, 14066, 17312, 19136, 24886, 28132, 34624, 38272, 49772, 56264, 69248, 99544, 112528, 161759, 199088, 225056, 323518, 398176, 450112, 647036, 796352, 900224, 1294072, 1592704, 2588144, 5176288, 10352576, 20705152]

約数ペア:

[(1, 20705152), (2, 10352576), (4, 5176288), (8, 2588144), (13, 1592704), (16, 1294072), (23, 900224), (26, 796352), (32, 647036), (46, 450112), (52, 398176), (64, 323518), (92, 225056), (104, 199088), (128, 161759), (184, 112528), (208, 99544), (299, 69248), (368, 56264), (416, 49772), (541, 38272), (598, 34624), (736, 28132), (832, 24886), (1082, 19136), (1196, 17312), (1472, 14066), (1664, 12443), (2164, 9568), (2392, 8656), (2944, 7033), (4328, 4784)]