19810882

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1$

素因数の和:395

約数の個数: 64

約数和(自身を含む): 40884480

約数和(自身を除く): 21073598

約数列:

[1, 2, 7, 13, 14, 17, 19, 26, 34, 38, 91, 119, 133, 182, 221, 238, 247, 266, 323, 337, 442, 494, 646, 674, 1547, 1729, 2261, 2359, 3094, 3458, 4199, 4381, 4522, 4718, 5729, 6403, 8398, 8762, 11458, 12806, 29393, 30667, 40103, 44821, 58786, 61334, 74477, 80206, 83239, 89642, 108851, 148954, 166478, 217702, 521339, 582673, 761957, 1042678, 1165346, 1415063, 1523914, 2830126, 9905441, 19810882]

約数ペア:

[(1, 19810882), (2, 9905441), (7, 2830126), (13, 1523914), (14, 1415063), (17, 1165346), (19, 1042678), (26, 761957), (34, 582673), (38, 521339), (91, 217702), (119, 166478), (133, 148954), (182, 108851), (221, 89642), (238, 83239), (247, 80206), (266, 74477), (323, 61334), (337, 58786), (442, 44821), (494, 40103), (646, 30667), (674, 29393), (1547, 12806), (1729, 11458), (2261, 8762), (2359, 8398), (3094, 6403), (3458, 5729), (4199, 4718), (4381, 4522)]