21431080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{919}}^1$

素因数の和:994

約数の個数: 64

約数和(自身を含む): 53654400

約数和(自身を除く): 32223320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 53, 55, 88, 106, 110, 212, 220, 265, 424, 440, 530, 583, 919, 1060, 1166, 1838, 2120, 2332, 2915, 3676, 4595, 4664, 5830, 7352, 9190, 10109, 11660, 18380, 20218, 23320, 36760, 40436, 48707, 50545, 80872, 97414, 101090, 194828, 202180, 243535, 389656, 404360, 487070, 535777, 974140, 1071554, 1948280, 2143108, 2678885, 4286216, 5357770, 10715540, 21431080]

約数ペア:

[(1, 21431080), (2, 10715540), (4, 5357770), (5, 4286216), (8, 2678885), (10, 2143108), (11, 1948280), (20, 1071554), (22, 974140), (40, 535777), (44, 487070), (53, 404360), (55, 389656), (88, 243535), (106, 202180), (110, 194828), (212, 101090), (220, 97414), (265, 80872), (424, 50545), (440, 48707), (530, 40436), (583, 36760), (919, 23320), (1060, 20218), (1166, 18380), (1838, 11660), (2120, 10109), (2332, 9190), (2915, 7352), (3676, 5830), (4595, 4664)]