221618187

素因数分解:

$3^6\times 7^1\times {\mathrm{137}}^1\times {\mathrm{317}}^1$

素因数の和:479

約数の個数: 56

約数和(自身を含む): 383721696

約数和(自身を除く): 162103509

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 137, 189, 243, 317, 411, 567, 729, 951, 959, 1233, 1701, 2219, 2853, 2877, 3699, 5103, 6657, 8559, 8631, 11097, 19971, 25677, 25893, 33291, 43429, 59913, 77031, 77679, 99873, 130287, 179739, 231093, 233037, 304003, 390861, 539217, 699111, 912009, 1172583, 1617651, 2736027, 3517749, 8208081, 10553247, 24624243, 31659741, 73872729, 221618187]

約数ペア:

[(1, 221618187), (3, 73872729), (7, 31659741), (9, 24624243), (21, 10553247), (27, 8208081), (63, 3517749), (81, 2736027), (137, 1617651), (189, 1172583), (243, 912009), (317, 699111), (411, 539217), (567, 390861), (729, 304003), (951, 233037), (959, 231093), (1233, 179739), (1701, 130287), (2219, 99873), (2853, 77679), (2877, 77031), (3699, 59913), (5103, 43429), (6657, 33291), (8559, 25893), (8631, 25677), (11097, 19971)]