21461291901

素因数分解:

$3^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{284591}}^1$

素因数の和:284636

約数の個数: 60

約数和(自身を含む): 39256620480

約数和(自身を除く): 17795328579

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 81, 133, 147, 171, 189, 399, 441, 513, 567, 931, 1197, 1323, 1539, 2793, 3591, 3969, 8379, 10773, 25137, 75411, 284591, 853773, 1992137, 2561319, 5407229, 5976411, 7683957, 13944959, 16221687, 17929233, 23051871, 37850603, 41834877, 48665061, 53787699, 113551809, 125504631, 145995183, 161363097, 264954221, 340655427, 376513893, 437985549, 794862663, 1021966281, 1129541679, 2384587989, 3065898843, 7153763967, 21461291901]

約数ペア:

[(1, 21461291901), (3, 7153763967), (7, 3065898843), (9, 2384587989), (19, 1129541679), (21, 1021966281), (27, 794862663), (49, 437985549), (57, 376513893), (63, 340655427), (81, 264954221), (133, 161363097), (147, 145995183), (171, 125504631), (189, 113551809), (399, 53787699), (441, 48665061), (513, 41834877), (567, 37850603), (931, 23051871), (1197, 17929233), (1323, 16221687), (1539, 13944959), (2793, 7683957), (3591, 5976411), (3969, 5407229), (8379, 2561319), (10773, 1992137), (25137, 853773), (75411, 284591)]