21051108

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1451}}^1$

素因数の和:1505

約数の個数: 72

約数和(自身を含む): 59195136

約数和(自身を除く): 38144028

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 31, 36, 39, 52, 62, 78, 93, 117, 124, 156, 186, 234, 279, 372, 403, 468, 558, 806, 1116, 1209, 1451, 1612, 2418, 2902, 3627, 4353, 4836, 5804, 7254, 8706, 13059, 14508, 17412, 18863, 26118, 37726, 44981, 52236, 56589, 75452, 89962, 113178, 134943, 169767, 179924, 226356, 269886, 339534, 404829, 539772, 584753, 679068, 809658, 1169506, 1619316, 1754259, 2339012, 3508518, 5262777, 7017036, 10525554, 21051108]

約数ペア:

[(1, 21051108), (2, 10525554), (3, 7017036), (4, 5262777), (6, 3508518), (9, 2339012), (12, 1754259), (13, 1619316), (18, 1169506), (26, 809658), (31, 679068), (36, 584753), (39, 539772), (52, 404829), (62, 339534), (78, 269886), (93, 226356), (117, 179924), (124, 169767), (156, 134943), (186, 113178), (234, 89962), (279, 75452), (372, 56589), (403, 52236), (468, 44981), (558, 37726), (806, 26118), (1116, 18863), (1209, 17412), (1451, 14508), (1612, 13059), (2418, 8706), (2902, 7254), (3627, 5804), (4353, 4836)]