1638807471

素因数分解:

$3^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1\times {\mathrm{241}}^1$

素因数の和:506

約数の個数: 80

約数和(自身を含む): 2867293440

約数和(自身を除く): 1228485969

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 81, 179, 189, 201, 241, 469, 537, 567, 603, 723, 1253, 1407, 1611, 1687, 1809, 2169, 3759, 4221, 4833, 5061, 5427, 6507, 11277, 11993, 12663, 14499, 15183, 16147, 19521, 33831, 35979, 37989, 43139, 45549, 48441, 83951, 101493, 107937, 113029, 129417, 136647, 145323, 251853, 301973, 323811, 339087, 388251, 435969, 755559, 905919, 971433, 1017261, 1164753, 1307907, 2266677, 2717757, 2890313, 3051783, 3494259, 6800031, 8153271, 8670939, 9155349, 20232191, 24459813, 26012817, 60696573, 78038451, 182089719, 234115353, 546269157, 1638807471]

約数ペア:

[(1, 1638807471), (3, 546269157), (7, 234115353), (9, 182089719), (21, 78038451), (27, 60696573), (63, 26012817), (67, 24459813), (81, 20232191), (179, 9155349), (189, 8670939), (201, 8153271), (241, 6800031), (469, 3494259), (537, 3051783), (567, 2890313), (603, 2717757), (723, 2266677), (1253, 1307907), (1407, 1164753), (1611, 1017261), (1687, 971433), (1809, 905919), (2169, 755559), (3759, 435969), (4221, 388251), (4833, 339087), (5061, 323811), (5427, 301973), (6507, 251853), (11277, 145323), (11993, 136647), (12663, 129417), (14499, 113029), (15183, 107937), (16147, 101493), (19521, 83951), (33831, 48441), (35979, 45549), (37989, 43139)]