18931185

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:124

約数の個数: 128

約数和(自身を含む): 43868160

約数和(自身を除く): 24936975

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 23, 27, 35, 39, 45, 63, 65, 67, 69, 91, 105, 115, 117, 135, 161, 189, 195, 201, 207, 273, 299, 315, 335, 345, 351, 455, 469, 483, 585, 603, 621, 805, 819, 871, 897, 945, 1005, 1035, 1365, 1407, 1449, 1495, 1541, 1755, 1809, 2093, 2345, 2415, 2457, 2613, 2691, 3015, 3105, 4095, 4221, 4347, 4355, 4485, 4623, 6097, 6279, 7035, 7245, 7705, 7839, 8073, 9045, 10465, 10787, 12285, 12663, 13065, 13455, 13869, 18291, 18837, 20033, 21105, 21735, 23115, 23517, 30485, 31395, 32361, 39195, 40365, 41607, 53935, 54873, 56511, 60099, 63315, 69345, 91455, 94185, 97083, 100165, 117585, 140231, 161805, 164619, 180297, 208035, 274365, 282555, 291249, 300495, 420693, 485415, 540891, 701155, 823095, 901485, 1262079, 1456245, 2103465, 2704455, 3786237, 6310395, 18931185]

約数ペア:

[(1, 18931185), (3, 6310395), (5, 3786237), (7, 2704455), (9, 2103465), (13, 1456245), (15, 1262079), (21, 901485), (23, 823095), (27, 701155), (35, 540891), (39, 485415), (45, 420693), (63, 300495), (65, 291249), (67, 282555), (69, 274365), (91, 208035), (105, 180297), (115, 164619), (117, 161805), (135, 140231), (161, 117585), (189, 100165), (195, 97083), (201, 94185), (207, 91455), (273, 69345), (299, 63315), (315, 60099), (335, 56511), (345, 54873), (351, 53935), (455, 41607), (469, 40365), (483, 39195), (585, 32361), (603, 31395), (621, 30485), (805, 23517), (819, 23115), (871, 21735), (897, 21105), (945, 20033), (1005, 18837), (1035, 18291), (1365, 13869), (1407, 13455), (1449, 13065), (1495, 12663), (1541, 12285), (1755, 10787), (1809, 10465), (2093, 9045), (2345, 8073), (2415, 7839), (2457, 7705), (2613, 7245), (2691, 7035), (3015, 6279), (3105, 6097), (4095, 4623), (4221, 4485), (4347, 4355)]