21126816

素因数分解:

$2^5\times 3^2\times {\mathrm{109}}^1\times {\mathrm{673}}^1$

素因数の和:798

約数の個数: 72

約数和(自身を含む): 60720660

約数和(自身を除く): 39593844

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 109, 144, 218, 288, 327, 436, 654, 673, 872, 981, 1308, 1346, 1744, 1962, 2019, 2616, 2692, 3488, 3924, 4038, 5232, 5384, 6057, 7848, 8076, 10464, 10768, 12114, 15696, 16152, 21536, 24228, 31392, 32304, 48456, 64608, 73357, 96912, 146714, 193824, 220071, 293428, 440142, 586856, 660213, 880284, 1173712, 1320426, 1760568, 2347424, 2640852, 3521136, 5281704, 7042272, 10563408, 21126816]

約数ペア:

[(1, 21126816), (2, 10563408), (3, 7042272), (4, 5281704), (6, 3521136), (8, 2640852), (9, 2347424), (12, 1760568), (16, 1320426), (18, 1173712), (24, 880284), (32, 660213), (36, 586856), (48, 440142), (72, 293428), (96, 220071), (109, 193824), (144, 146714), (218, 96912), (288, 73357), (327, 64608), (436, 48456), (654, 32304), (673, 31392), (872, 24228), (981, 21536), (1308, 16152), (1346, 15696), (1744, 12114), (1962, 10768), (2019, 10464), (2616, 8076), (2692, 7848), (3488, 6057), (3924, 5384), (4038, 5232)]