20739180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^2$

素因数の和:164

約数の個数: 144

約数和(自身を含む): 73495296

約数和(自身を除く): 52756116

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 67, 70, 77, 84, 105, 110, 132, 134, 140, 154, 165, 201, 210, 220, 231, 268, 308, 330, 335, 385, 402, 420, 462, 469, 660, 670, 737, 770, 804, 924, 938, 1005, 1155, 1340, 1407, 1474, 1540, 1876, 2010, 2211, 2310, 2345, 2814, 2948, 3685, 4020, 4422, 4489, 4620, 4690, 5159, 5628, 7035, 7370, 8844, 8978, 9380, 10318, 11055, 13467, 14070, 14740, 15477, 17956, 20636, 22110, 22445, 25795, 26934, 28140, 30954, 31423, 44220, 44890, 49379, 51590, 53868, 61908, 62846, 67335, 77385, 89780, 94269, 98758, 103180, 125692, 134670, 148137, 154770, 157115, 188538, 197516, 246895, 269340, 296274, 309540, 314230, 345653, 377076, 471345, 493790, 592548, 628460, 691306, 740685, 942690, 987580, 1036959, 1382612, 1481370, 1728265, 1885380, 2073918, 2962740, 3456530, 4147836, 5184795, 6913060, 10369590, 20739180]

約数ペア:

[(1, 20739180), (2, 10369590), (3, 6913060), (4, 5184795), (5, 4147836), (6, 3456530), (7, 2962740), (10, 2073918), (11, 1885380), (12, 1728265), (14, 1481370), (15, 1382612), (20, 1036959), (21, 987580), (22, 942690), (28, 740685), (30, 691306), (33, 628460), (35, 592548), (42, 493790), (44, 471345), (55, 377076), (60, 345653), (66, 314230), (67, 309540), (70, 296274), (77, 269340), (84, 246895), (105, 197516), (110, 188538), (132, 157115), (134, 154770), (140, 148137), (154, 134670), (165, 125692), (201, 103180), (210, 98758), (220, 94269), (231, 89780), (268, 77385), (308, 67335), (330, 62846), (335, 61908), (385, 53868), (402, 51590), (420, 49379), (462, 44890), (469, 44220), (660, 31423), (670, 30954), (737, 28140), (770, 26934), (804, 25795), (924, 22445), (938, 22110), (1005, 20636), (1155, 17956), (1340, 15477), (1407, 14740), (1474, 14070), (1540, 13467), (1876, 11055), (2010, 10318), (2211, 9380), (2310, 8978), (2345, 8844), (2814, 7370), (2948, 7035), (3685, 5628), (4020, 5159), (4422, 4690), (4489, 4620)]