20587480

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5783}}^1$

素因数の和:5883

約数の個数: 32

約数和(自身を含む): 46850400

約数和(自身を除く): 26262920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5783, 11566, 23132, 28915, 46264, 57830, 115660, 231320, 514687, 1029374, 2058748, 2573435, 4117496, 5146870, 10293740, 20587480]

約数ペア:

[(1, 20587480), (2, 10293740), (4, 5146870), (5, 4117496), (8, 2573435), (10, 2058748), (20, 1029374), (40, 514687), (89, 231320), (178, 115660), (356, 57830), (445, 46264), (712, 28915), (890, 23132), (1780, 11566), (3560, 5783)]