221489289

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1667}}^1$

素因数の和:1739

約数の個数: 64

約数和(自身を含む): 405657600

約数和(自身を除く): 184168311

約数列:

[1, 3, 7, 9, 19, 21, 27, 37, 57, 63, 111, 133, 171, 189, 259, 333, 399, 513, 703, 777, 999, 1197, 1667, 2109, 2331, 3591, 4921, 5001, 6327, 6993, 11669, 14763, 15003, 18981, 31673, 35007, 44289, 45009, 61679, 95019, 105021, 132867, 185037, 221711, 285057, 315063, 431753, 555111, 665133, 855171, 1171901, 1295259, 1665333, 1995399, 3515703, 3885777, 5986197, 8203307, 10547109, 11657331, 24609921, 31641327, 73829763, 221489289]

約数ペア:

[(1, 221489289), (3, 73829763), (7, 31641327), (9, 24609921), (19, 11657331), (21, 10547109), (27, 8203307), (37, 5986197), (57, 3885777), (63, 3515703), (111, 1995399), (133, 1665333), (171, 1295259), (189, 1171901), (259, 855171), (333, 665133), (399, 555111), (513, 431753), (703, 315063), (777, 285057), (999, 221711), (1197, 185037), (1667, 132867), (2109, 105021), (2331, 95019), (3591, 61679), (4921, 45009), (5001, 44289), (6327, 35007), (6993, 31673), (11669, 18981), (14763, 15003)]