20791188

素因数分解:

$2^2\times 3^3\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:115

約数の個数: 144

約数和(自身を含む): 62265280

約数和(自身を除く): 41474092

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 33, 36, 37, 43, 44, 54, 66, 74, 86, 99, 108, 111, 121, 129, 132, 148, 172, 198, 222, 242, 258, 297, 333, 363, 387, 396, 407, 444, 473, 484, 516, 594, 666, 726, 774, 814, 946, 999, 1089, 1161, 1188, 1221, 1332, 1419, 1452, 1548, 1591, 1628, 1892, 1998, 2178, 2322, 2442, 2838, 3182, 3267, 3663, 3996, 4257, 4356, 4477, 4644, 4773, 4884, 5203, 5676, 6364, 6534, 7326, 8514, 8954, 9546, 10406, 10989, 12771, 13068, 13431, 14319, 14652, 15609, 17028, 17501, 17908, 19092, 20812, 21978, 25542, 26862, 28638, 31218, 35002, 40293, 42957, 43956, 46827, 51084, 52503, 53724, 57276, 62436, 70004, 80586, 85914, 93654, 105006, 120879, 140481, 157509, 161172, 171828, 187308, 192511, 210012, 241758, 280962, 315018, 385022, 472527, 483516, 561924, 577533, 630036, 770044, 945054, 1155066, 1732599, 1890108, 2310132, 3465198, 5197797, 6930396, 10395594, 20791188]

約数ペア:

[(1, 20791188), (2, 10395594), (3, 6930396), (4, 5197797), (6, 3465198), (9, 2310132), (11, 1890108), (12, 1732599), (18, 1155066), (22, 945054), (27, 770044), (33, 630036), (36, 577533), (37, 561924), (43, 483516), (44, 472527), (54, 385022), (66, 315018), (74, 280962), (86, 241758), (99, 210012), (108, 192511), (111, 187308), (121, 171828), (129, 161172), (132, 157509), (148, 140481), (172, 120879), (198, 105006), (222, 93654), (242, 85914), (258, 80586), (297, 70004), (333, 62436), (363, 57276), (387, 53724), (396, 52503), (407, 51084), (444, 46827), (473, 43956), (484, 42957), (516, 40293), (594, 35002), (666, 31218), (726, 28638), (774, 26862), (814, 25542), (946, 21978), (999, 20812), (1089, 19092), (1161, 17908), (1188, 17501), (1221, 17028), (1332, 15609), (1419, 14652), (1452, 14319), (1548, 13431), (1591, 13068), (1628, 12771), (1892, 10989), (1998, 10406), (2178, 9546), (2322, 8954), (2442, 8514), (2838, 7326), (3182, 6534), (3267, 6364), (3663, 5676), (3996, 5203), (4257, 4884), (4356, 4773), (4477, 4644)]