20545140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4447}}^1$

素因数の和:4477

約数の個数: 96

約数和(自身を含む): 71737344

約数和(自身を除く): 51192204

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, 70, 77, 84, 105, 110, 132, 140, 154, 165, 210, 220, 231, 308, 330, 385, 420, 462, 660, 770, 924, 1155, 1540, 2310, 4447, 4620, 8894, 13341, 17788, 22235, 26682, 31129, 44470, 48917, 53364, 62258, 66705, 88940, 93387, 97834, 124516, 133410, 146751, 155645, 186774, 195668, 244585, 266820, 293502, 311290, 342419, 373548, 466935, 489170, 587004, 622580, 684838, 733755, 933870, 978340, 1027257, 1369676, 1467510, 1712095, 1867740, 2054514, 2935020, 3424190, 4109028, 5136285, 6848380, 10272570, 20545140]

約数ペア:

[(1, 20545140), (2, 10272570), (3, 6848380), (4, 5136285), (5, 4109028), (6, 3424190), (7, 2935020), (10, 2054514), (11, 1867740), (12, 1712095), (14, 1467510), (15, 1369676), (20, 1027257), (21, 978340), (22, 933870), (28, 733755), (30, 684838), (33, 622580), (35, 587004), (42, 489170), (44, 466935), (55, 373548), (60, 342419), (66, 311290), (70, 293502), (77, 266820), (84, 244585), (105, 195668), (110, 186774), (132, 155645), (140, 146751), (154, 133410), (165, 124516), (210, 97834), (220, 93387), (231, 88940), (308, 66705), (330, 62258), (385, 53364), (420, 48917), (462, 44470), (660, 31129), (770, 26682), (924, 22235), (1155, 17788), (1540, 13341), (2310, 8894), (4447, 4620)]