19993764

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{919}}^1$

素因数の和:977

約数の個数: 72

約数和(自身を含む): 55796160

約数和(自身を除く): 35802396

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 49, 74, 84, 98, 111, 147, 148, 196, 222, 259, 294, 444, 518, 588, 777, 919, 1036, 1554, 1813, 1838, 2757, 3108, 3626, 3676, 5439, 5514, 6433, 7252, 10878, 11028, 12866, 19299, 21756, 25732, 34003, 38598, 45031, 68006, 77196, 90062, 102009, 135093, 136012, 180124, 204018, 238021, 270186, 408036, 476042, 540372, 714063, 952084, 1428126, 1666147, 2856252, 3332294, 4998441, 6664588, 9996882, 19993764]

約数ペア:

[(1, 19993764), (2, 9996882), (3, 6664588), (4, 4998441), (6, 3332294), (7, 2856252), (12, 1666147), (14, 1428126), (21, 952084), (28, 714063), (37, 540372), (42, 476042), (49, 408036), (74, 270186), (84, 238021), (98, 204018), (111, 180124), (147, 136012), (148, 135093), (196, 102009), (222, 90062), (259, 77196), (294, 68006), (444, 45031), (518, 38598), (588, 34003), (777, 25732), (919, 21756), (1036, 19299), (1554, 12866), (1813, 11028), (1838, 10878), (2757, 7252), (3108, 6433), (3626, 5514), (3676, 5439)]