21385415401

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{115429}}^1$

素因数の和:115661

約数の個数: 24

約数和(自身を含む): 26318040000

約数和(自身を除く): 4932624599

約数列:

[1, 7, 19, 49, 133, 199, 931, 1393, 3781, 9751, 26467, 115429, 185269, 808003, 2193151, 5656021, 15352057, 22970371, 107464399, 160792597, 436437049, 1125548179, 3055059343, 21385415401]

約数ペア:

[(1, 21385415401), (7, 3055059343), (19, 1125548179), (49, 436437049), (133, 160792597), (199, 107464399), (931, 22970371), (1393, 15352057), (3781, 5656021), (9751, 2193151), (26467, 808003), (115429, 185269)]