19889254

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 48

約数和(自身を含む): 38304000

約数和(自身を除く): 18414746

約数列:

[1, 2, 7, 11, 14, 22, 59, 77, 118, 121, 154, 199, 242, 398, 413, 649, 826, 847, 1298, 1393, 1694, 2189, 2786, 4378, 4543, 7139, 9086, 11741, 14278, 15323, 23482, 24079, 30646, 48158, 49973, 82187, 99946, 129151, 164374, 168553, 258302, 337106, 904057, 1420661, 1808114, 2841322, 9944627, 19889254]

約数ペア:

[(1, 19889254), (2, 9944627), (7, 2841322), (11, 1808114), (14, 1420661), (22, 904057), (59, 337106), (77, 258302), (118, 168553), (121, 164374), (154, 129151), (199, 99946), (242, 82187), (398, 49973), (413, 48158), (649, 30646), (826, 24079), (847, 23482), (1298, 15323), (1393, 14278), (1694, 11741), (2189, 9086), (2786, 7139), (4378, 4543)]