19990542

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1013}}^1$

素因数の和:1065

約数の個数: 64

約数和(自身を含む): 49061376

約数和(自身を除く): 29070834

約数列:

[1, 2, 3, 6, 11, 13, 22, 23, 26, 33, 39, 46, 66, 69, 78, 138, 143, 253, 286, 299, 429, 506, 598, 759, 858, 897, 1013, 1518, 1794, 2026, 3039, 3289, 6078, 6578, 9867, 11143, 13169, 19734, 22286, 23299, 26338, 33429, 39507, 46598, 66858, 69897, 79014, 139794, 144859, 256289, 289718, 302887, 434577, 512578, 605774, 768867, 869154, 908661, 1537734, 1817322, 3331757, 6663514, 9995271, 19990542]

約数ペア:

[(1, 19990542), (2, 9995271), (3, 6663514), (6, 3331757), (11, 1817322), (13, 1537734), (22, 908661), (23, 869154), (26, 768867), (33, 605774), (39, 512578), (46, 434577), (66, 302887), (69, 289718), (78, 256289), (138, 144859), (143, 139794), (253, 79014), (286, 69897), (299, 66858), (429, 46598), (506, 39507), (598, 33429), (759, 26338), (858, 23299), (897, 22286), (1013, 19734), (1518, 13169), (1794, 11143), (2026, 9867), (3039, 6578), (3289, 6078)]