21667646

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 44513280

約数和(自身を除く): 22845634

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 79, 91, 137, 143, 154, 158, 182, 274, 286, 553, 869, 959, 1001, 1027, 1106, 1507, 1738, 1781, 1918, 2002, 2054, 3014, 3562, 6083, 7189, 10549, 10823, 11297, 12166, 12467, 14378, 19591, 21098, 21646, 22594, 24934, 39182, 75761, 79079, 119053, 137137, 140699, 151522, 158158, 238106, 274274, 281398, 833371, 984893, 1547689, 1666742, 1969786, 3095378, 10833823, 21667646]

約数ペア:

[(1, 21667646), (2, 10833823), (7, 3095378), (11, 1969786), (13, 1666742), (14, 1547689), (22, 984893), (26, 833371), (77, 281398), (79, 274274), (91, 238106), (137, 158158), (143, 151522), (154, 140699), (158, 137137), (182, 119053), (274, 79079), (286, 75761), (553, 39182), (869, 24934), (959, 22594), (1001, 21646), (1027, 21098), (1106, 19591), (1507, 14378), (1738, 12467), (1781, 12166), (1918, 11297), (2002, 10823), (2054, 10549), (3014, 7189), (3562, 6083)]