20284672

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 44150400

約数和(自身を除く): 23865728

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 59, 64, 68, 79, 118, 128, 136, 158, 236, 256, 272, 316, 472, 544, 632, 944, 1003, 1088, 1264, 1343, 1888, 2006, 2176, 2528, 2686, 3776, 4012, 4352, 4661, 5056, 5372, 7552, 8024, 9322, 10112, 10744, 15104, 16048, 18644, 20224, 21488, 32096, 37288, 42976, 64192, 74576, 79237, 85952, 128384, 149152, 158474, 171904, 256768, 298304, 316948, 343808, 596608, 633896, 1193216, 1267792, 2535584, 5071168, 10142336, 20284672]

約数ペア:

[(1, 20284672), (2, 10142336), (4, 5071168), (8, 2535584), (16, 1267792), (17, 1193216), (32, 633896), (34, 596608), (59, 343808), (64, 316948), (68, 298304), (79, 256768), (118, 171904), (128, 158474), (136, 149152), (158, 128384), (236, 85952), (256, 79237), (272, 74576), (316, 64192), (472, 42976), (544, 37288), (632, 32096), (944, 21488), (1003, 20224), (1088, 18644), (1264, 16048), (1343, 15104), (1888, 10744), (2006, 10112), (2176, 9322), (2528, 8024), (2686, 7552), (3776, 5372), (4012, 5056), (4352, 4661)]