20436381

素因数分解:

$3^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:316

約数の個数: 60

約数和(自身を含む): 37519680

約数和(自身を除く): 17083299

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 81, 133, 147, 171, 189, 271, 399, 441, 513, 567, 813, 931, 1197, 1323, 1539, 1897, 2439, 2793, 3591, 3969, 5149, 5691, 7317, 8379, 10773, 13279, 15447, 17073, 21951, 25137, 36043, 39837, 46341, 51219, 75411, 108129, 119511, 139023, 153657, 252301, 324387, 358533, 417069, 756903, 973161, 1075599, 2270709, 2919483, 6812127, 20436381]

約数ペア:

[(1, 20436381), (3, 6812127), (7, 2919483), (9, 2270709), (19, 1075599), (21, 973161), (27, 756903), (49, 417069), (57, 358533), (63, 324387), (81, 252301), (133, 153657), (147, 139023), (171, 119511), (189, 108129), (271, 75411), (399, 51219), (441, 46341), (513, 39837), (567, 36043), (813, 25137), (931, 21951), (1197, 17073), (1323, 15447), (1539, 13279), (1897, 10773), (2439, 8379), (2793, 7317), (3591, 5691), (3969, 5149)]