21871512

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{7789}}^1$

素因数の和:7817

約数の個数: 64

約数和(自身を含む): 65436000

約数和(自身を除く): 43564488

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 312, 351, 468, 702, 936, 1404, 2808, 7789, 15578, 23367, 31156, 46734, 62312, 70101, 93468, 101257, 140202, 186936, 202514, 210303, 280404, 303771, 405028, 420606, 560808, 607542, 810056, 841212, 911313, 1215084, 1682424, 1822626, 2430168, 2733939, 3645252, 5467878, 7290504, 10935756, 21871512]

約数ペア:

[(1, 21871512), (2, 10935756), (3, 7290504), (4, 5467878), (6, 3645252), (8, 2733939), (9, 2430168), (12, 1822626), (13, 1682424), (18, 1215084), (24, 911313), (26, 841212), (27, 810056), (36, 607542), (39, 560808), (52, 420606), (54, 405028), (72, 303771), (78, 280404), (104, 210303), (108, 202514), (117, 186936), (156, 140202), (216, 101257), (234, 93468), (312, 70101), (351, 62312), (468, 46734), (702, 31156), (936, 23367), (1404, 15578), (2808, 7789)]