21490796951

素因数分解:

${\mathrm{13}}^3\times {\mathrm{71}}^1\times {\mathrm{311}}^1\times {\mathrm{443}}^1$

素因数の和:864

約数の個数: 32

約数和(自身を含む): 23738158080

約数和(自身を除く): 2247361129

約数列:

[1, 13, 71, 169, 311, 443, 923, 2197, 4043, 5759, 11999, 22081, 31453, 52559, 74867, 137773, 155987, 287053, 408889, 683267, 973271, 1791049, 3731689, 5315557, 9781883, 23283637, 48511957, 69102241, 127164479, 302687281, 1653138227, 21490796951]

約数ペア:

[(1, 21490796951), (13, 1653138227), (71, 302687281), (169, 127164479), (311, 69102241), (443, 48511957), (923, 23283637), (2197, 9781883), (4043, 5315557), (5759, 3731689), (11999, 1791049), (22081, 973271), (31453, 683267), (52559, 408889), (74867, 287053), (137773, 155987)]