21427210

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{6247}}^1$

素因数の和:6275

約数の個数: 32

約数和(自身を含む): 44985600

約数和(自身を除く): 23558390

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 6247, 12494, 31235, 43729, 62470, 87458, 218645, 306103, 437290, 612206, 1530515, 2142721, 3061030, 4285442, 10713605, 21427210]

約数ペア:

[(1, 21427210), (2, 10713605), (5, 4285442), (7, 3061030), (10, 2142721), (14, 1530515), (35, 612206), (49, 437290), (70, 306103), (98, 218645), (245, 87458), (343, 62470), (490, 43729), (686, 31235), (1715, 12494), (3430, 6247)]