20243840

素因数分解:

$2^7\times 5^1\times {\mathrm{47}}^1\times {\mathrm{673}}^1$

素因数の和:739

約数の個数: 64

約数和(自身を含む): 49498560

約数和(自身を除く): 29254720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 640, 673, 752, 940, 1346, 1504, 1880, 2692, 3008, 3365, 3760, 5384, 6016, 6730, 7520, 10768, 13460, 15040, 21536, 26920, 30080, 31631, 43072, 53840, 63262, 86144, 107680, 126524, 158155, 215360, 253048, 316310, 430720, 506096, 632620, 1012192, 1265240, 2024384, 2530480, 4048768, 5060960, 10121920, 20243840]

約数ペア:

[(1, 20243840), (2, 10121920), (4, 5060960), (5, 4048768), (8, 2530480), (10, 2024384), (16, 1265240), (20, 1012192), (32, 632620), (40, 506096), (47, 430720), (64, 316310), (80, 253048), (94, 215360), (128, 158155), (160, 126524), (188, 107680), (235, 86144), (320, 63262), (376, 53840), (470, 43072), (640, 31631), (673, 30080), (752, 26920), (940, 21536), (1346, 15040), (1504, 13460), (1880, 10768), (2692, 7520), (3008, 6730), (3365, 6016), (3760, 5384)]