20790791721

素因数分解:

$3^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{894343}}^1$

素因数の和:894403

約数の個数: 40

約数和(自身を含む): 36360449664

約数和(自身を除く): 15569657943

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 81, 123, 189, 287, 369, 567, 861, 1107, 2583, 3321, 7749, 23247, 894343, 2683029, 6260401, 8049087, 18781203, 24147261, 36668063, 56343609, 72441783, 110004189, 169030827, 256676441, 330012567, 507092481, 770029323, 990037701, 2310087969, 2970113103, 6930263907, 20790791721]

約数ペア:

[(1, 20790791721), (3, 6930263907), (7, 2970113103), (9, 2310087969), (21, 990037701), (27, 770029323), (41, 507092481), (63, 330012567), (81, 256676441), (123, 169030827), (189, 110004189), (287, 72441783), (369, 56343609), (567, 36668063), (861, 24147261), (1107, 18781203), (2583, 8049087), (3321, 6260401), (7749, 2683029), (23247, 894343)]