28059920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{563}}^1$

素因数の和:672

約数の個数: 80

約数和(自身を含む): 75530880

約数和(自身を除く): 47470960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 445, 560, 563, 623, 712, 890, 1126, 1246, 1424, 1780, 2252, 2492, 2815, 3115, 3560, 3941, 4504, 4984, 5630, 6230, 7120, 7882, 9008, 9968, 11260, 12460, 15764, 19705, 22520, 24920, 31528, 39410, 45040, 49840, 50107, 63056, 78820, 100214, 157640, 200428, 250535, 315280, 350749, 400856, 501070, 701498, 801712, 1002140, 1402996, 1753745, 2004280, 2805992, 3507490, 4008560, 5611984, 7014980, 14029960, 28059920]

約数ペア:

[(1, 28059920), (2, 14029960), (4, 7014980), (5, 5611984), (7, 4008560), (8, 3507490), (10, 2805992), (14, 2004280), (16, 1753745), (20, 1402996), (28, 1002140), (35, 801712), (40, 701498), (56, 501070), (70, 400856), (80, 350749), (89, 315280), (112, 250535), (140, 200428), (178, 157640), (280, 100214), (356, 78820), (445, 63056), (560, 50107), (563, 49840), (623, 45040), (712, 39410), (890, 31528), (1126, 24920), (1246, 22520), (1424, 19705), (1780, 15764), (2252, 12460), (2492, 11260), (2815, 9968), (3115, 9008), (3560, 7882), (3941, 7120), (4504, 6230), (4984, 5630)]