20405721063

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{1013}}^1$

素因数の和:1253

約数の個数: 96

約数和(自身を含む): 34800869376

約数和(自身を除く): 14395148313

約数列:

[1, 3, 7, 13, 21, 39, 49, 83, 91, 127, 147, 249, 273, 381, 581, 637, 889, 1013, 1079, 1651, 1743, 1911, 2667, 3039, 3237, 4067, 4953, 6223, 7091, 7553, 10541, 11557, 12201, 13169, 18669, 21273, 22659, 31623, 34671, 39507, 49637, 52871, 73787, 80899, 84079, 92183, 128651, 137033, 148911, 158613, 221361, 242697, 252237, 276549, 385953, 411099, 516509, 588553, 645281, 900557, 959231, 1093027, 1549527, 1672463, 1765659, 1935843, 2701671, 2877693, 3279081, 4119871, 5017389, 6303899, 6714617, 7651189, 10678033, 11707241, 12359613, 18911697, 20143851, 22953567, 32034099, 35121723, 53558323, 74746231, 81950687, 138814429, 160674969, 224238693, 245852061, 416443287, 523223617, 971701003, 1569670851, 2915103009, 6801907021, 20405721063]

約数ペア:

[(1, 20405721063), (3, 6801907021), (7, 2915103009), (13, 1569670851), (21, 971701003), (39, 523223617), (49, 416443287), (83, 245852061), (91, 224238693), (127, 160674969), (147, 138814429), (249, 81950687), (273, 74746231), (381, 53558323), (581, 35121723), (637, 32034099), (889, 22953567), (1013, 20143851), (1079, 18911697), (1651, 12359613), (1743, 11707241), (1911, 10678033), (2667, 7651189), (3039, 6714617), (3237, 6303899), (4067, 5017389), (4953, 4119871), (6223, 3279081), (7091, 2877693), (7553, 2701671), (10541, 1935843), (11557, 1765659), (12201, 1672463), (13169, 1549527), (18669, 1093027), (21273, 959231), (22659, 900557), (31623, 645281), (34671, 588553), (39507, 516509), (49637, 411099), (52871, 385953), (73787, 276549), (80899, 252237), (84079, 242697), (92183, 221361), (128651, 158613), (137033, 148911)]