20407072

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1$

素因数の和:290

約数の個数: 96

約数和(自身を含む): 50948352

約数和(自身を除く): 30541280

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 23, 28, 32, 34, 46, 56, 68, 92, 112, 119, 136, 161, 184, 224, 233, 238, 272, 322, 368, 391, 466, 476, 544, 644, 736, 782, 932, 952, 1288, 1564, 1631, 1864, 1904, 2576, 2737, 3128, 3262, 3728, 3808, 3961, 5152, 5359, 5474, 6256, 6524, 7456, 7922, 10718, 10948, 12512, 13048, 15844, 21436, 21896, 26096, 27727, 31688, 37513, 42872, 43792, 52192, 55454, 63376, 75026, 85744, 87584, 91103, 110908, 126752, 150052, 171488, 182206, 221816, 300104, 364412, 443632, 600208, 637721, 728824, 887264, 1200416, 1275442, 1457648, 2550884, 2915296, 5101768, 10203536, 20407072]

約数ペア:

[(1, 20407072), (2, 10203536), (4, 5101768), (7, 2915296), (8, 2550884), (14, 1457648), (16, 1275442), (17, 1200416), (23, 887264), (28, 728824), (32, 637721), (34, 600208), (46, 443632), (56, 364412), (68, 300104), (92, 221816), (112, 182206), (119, 171488), (136, 150052), (161, 126752), (184, 110908), (224, 91103), (233, 87584), (238, 85744), (272, 75026), (322, 63376), (368, 55454), (391, 52192), (466, 43792), (476, 42872), (544, 37513), (644, 31688), (736, 27727), (782, 26096), (932, 21896), (952, 21436), (1288, 15844), (1564, 13048), (1631, 12512), (1864, 10948), (1904, 10718), (2576, 7922), (2737, 7456), (3128, 6524), (3262, 6256), (3728, 5474), (3808, 5359), (3961, 5152)]