20798752

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{173}}^1$

素因数の和:230

約数の個数: 72

約数和(自身を含む): 47114676

約数和(自身を除く): 26315924

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 173, 208, 221, 272, 289, 346, 416, 442, 544, 578, 692, 884, 1156, 1384, 1768, 2249, 2312, 2768, 2941, 3536, 3757, 4498, 4624, 5536, 5882, 7072, 7514, 8996, 9248, 11764, 15028, 17992, 23528, 30056, 35984, 38233, 47056, 49997, 60112, 71968, 76466, 94112, 99994, 120224, 152932, 199988, 305864, 399976, 611728, 649961, 799952, 1223456, 1299922, 1599904, 2599844, 5199688, 10399376, 20798752]

約数ペア:

[(1, 20798752), (2, 10399376), (4, 5199688), (8, 2599844), (13, 1599904), (16, 1299922), (17, 1223456), (26, 799952), (32, 649961), (34, 611728), (52, 399976), (68, 305864), (104, 199988), (136, 152932), (173, 120224), (208, 99994), (221, 94112), (272, 76466), (289, 71968), (346, 60112), (416, 49997), (442, 47056), (544, 38233), (578, 35984), (692, 30056), (884, 23528), (1156, 17992), (1384, 15028), (1768, 11764), (2249, 9248), (2312, 8996), (2768, 7514), (2941, 7072), (3536, 5882), (3757, 5536), (4498, 4624)]