20927900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4271}}^1$

素因数の和:4299

約数の個数: 54

約数和(自身を含む): 52840368

約数和(自身を除く): 31912468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4271, 4900, 8542, 17084, 21355, 29897, 42710, 59794, 85420, 106775, 119588, 149485, 209279, 213550, 298970, 418558, 427100, 597940, 747425, 837116, 1046395, 1494850, 2092790, 2989700, 4185580, 5231975, 10463950, 20927900]

約数ペア:

[(1, 20927900), (2, 10463950), (4, 5231975), (5, 4185580), (7, 2989700), (10, 2092790), (14, 1494850), (20, 1046395), (25, 837116), (28, 747425), (35, 597940), (49, 427100), (50, 418558), (70, 298970), (98, 213550), (100, 209279), (140, 149485), (175, 119588), (196, 106775), (245, 85420), (350, 59794), (490, 42710), (700, 29897), (980, 21355), (1225, 17084), (2450, 8542), (4271, 4900)]