20667478

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 18523562

約数列:

[1, 2, 13, 17, 19, 23, 26, 34, 38, 46, 107, 214, 221, 247, 299, 323, 391, 437, 442, 494, 598, 646, 782, 874, 1391, 1819, 2033, 2461, 2782, 3638, 4066, 4199, 4922, 5083, 5681, 7429, 8398, 10166, 11362, 14858, 23647, 26429, 31993, 34561, 41837, 46759, 47294, 52858, 63986, 69122, 83674, 93518, 96577, 193154, 449293, 543881, 607867, 794903, 898586, 1087762, 1215734, 1589806, 10333739, 20667478]

約数ペア:

[(1, 20667478), (2, 10333739), (13, 1589806), (17, 1215734), (19, 1087762), (23, 898586), (26, 794903), (34, 607867), (38, 543881), (46, 449293), (107, 193154), (214, 96577), (221, 93518), (247, 83674), (299, 69122), (323, 63986), (391, 52858), (437, 47294), (442, 46759), (494, 41837), (598, 34561), (646, 31993), (782, 26429), (874, 23647), (1391, 14858), (1819, 11362), (2033, 10166), (2461, 8398), (2782, 7429), (3638, 5681), (4066, 5083), (4199, 4922)]