20149600

素因数分解:

$2^5\times 5^2\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:392

約数の個数: 72

約数和(自身を含む): 49918680

約数和(自身を除く): 29769080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 89, 100, 160, 178, 200, 283, 356, 400, 445, 566, 712, 800, 890, 1132, 1415, 1424, 1780, 2225, 2264, 2830, 2848, 3560, 4450, 4528, 5660, 7075, 7120, 8900, 9056, 11320, 14150, 14240, 17800, 22640, 25187, 28300, 35600, 45280, 50374, 56600, 71200, 100748, 113200, 125935, 201496, 226400, 251870, 402992, 503740, 629675, 805984, 1007480, 1259350, 2014960, 2518700, 4029920, 5037400, 10074800, 20149600]

約数ペア:

[(1, 20149600), (2, 10074800), (4, 5037400), (5, 4029920), (8, 2518700), (10, 2014960), (16, 1259350), (20, 1007480), (25, 805984), (32, 629675), (40, 503740), (50, 402992), (80, 251870), (89, 226400), (100, 201496), (160, 125935), (178, 113200), (200, 100748), (283, 71200), (356, 56600), (400, 50374), (445, 45280), (566, 35600), (712, 28300), (800, 25187), (890, 22640), (1132, 17800), (1415, 14240), (1424, 14150), (1780, 11320), (2225, 9056), (2264, 8900), (2830, 7120), (2848, 7075), (3560, 5660), (4450, 4528)]