20391551037

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1\times {\mathrm{409}}^1$

素因数の和:828

約数の個数: 128

約数和(自身を含む): 36644160000

約数和(自身を除く): 16252608963

約数列:

[1, 3, 9, 11, 13, 27, 33, 37, 39, 99, 111, 117, 143, 297, 333, 349, 351, 407, 409, 429, 481, 999, 1047, 1221, 1227, 1287, 1443, 3141, 3663, 3681, 3839, 3861, 4329, 4499, 4537, 5291, 5317, 9423, 10989, 11043, 11517, 12913, 12987, 13497, 13611, 15133, 15873, 15951, 34551, 38739, 40491, 40833, 45399, 47619, 47853, 49907, 58487, 103653, 116217, 121473, 122499, 136197, 142043, 142741, 142857, 143559, 149721, 166463, 167869, 175461, 196729, 348651, 408591, 426129, 428223, 449163, 499389, 503607, 526383, 590187, 1278387, 1284669, 1347489, 1498167, 1510821, 1570151, 1579149, 1770561, 1846559, 1855633, 2164019, 3835161, 3854007, 4494501, 4532463, 4710453, 5281417, 5311683, 5539677, 5566899, 6492057, 14131359, 15844251, 16619031, 16700697, 19476171, 20411963, 42394077, 47532753, 49857093, 50102091, 58095587, 58428513, 61235889, 68658421, 142598259, 174286761, 183707667, 205975263, 522860283, 551123001, 617925789, 755242631, 1568580849, 1853777367, 2265727893, 6797183679, 20391551037]

約数ペア:

[(1, 20391551037), (3, 6797183679), (9, 2265727893), (11, 1853777367), (13, 1568580849), (27, 755242631), (33, 617925789), (37, 551123001), (39, 522860283), (99, 205975263), (111, 183707667), (117, 174286761), (143, 142598259), (297, 68658421), (333, 61235889), (349, 58428513), (351, 58095587), (407, 50102091), (409, 49857093), (429, 47532753), (481, 42394077), (999, 20411963), (1047, 19476171), (1221, 16700697), (1227, 16619031), (1287, 15844251), (1443, 14131359), (3141, 6492057), (3663, 5566899), (3681, 5539677), (3839, 5311683), (3861, 5281417), (4329, 4710453), (4499, 4532463), (4537, 4494501), (5291, 3854007), (5317, 3835161), (9423, 2164019), (10989, 1855633), (11043, 1846559), (11517, 1770561), (12913, 1579149), (12987, 1570151), (13497, 1510821), (13611, 1498167), (15133, 1347489), (15873, 1284669), (15951, 1278387), (34551, 590187), (38739, 526383), (40491, 503607), (40833, 499389), (45399, 449163), (47619, 428223), (47853, 426129), (49907, 408591), (58487, 348651), (103653, 196729), (116217, 175461), (121473, 167869), (122499, 166463), (136197, 149721), (142043, 143559), (142741, 142857)]