20424978

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3449}}^1$

素因数の和:3511

約数の個数: 48

約数和(自身を含む): 51667200

約数和(自身を除く): 31242222

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 47, 63, 94, 126, 141, 282, 329, 423, 658, 846, 987, 1974, 2961, 3449, 5922, 6898, 10347, 20694, 24143, 31041, 48286, 62082, 72429, 144858, 162103, 217287, 324206, 434574, 486309, 972618, 1134721, 1458927, 2269442, 2917854, 3404163, 6808326, 10212489, 20424978]

約数ペア:

[(1, 20424978), (2, 10212489), (3, 6808326), (6, 3404163), (7, 2917854), (9, 2269442), (14, 1458927), (18, 1134721), (21, 972618), (42, 486309), (47, 434574), (63, 324206), (94, 217287), (126, 162103), (141, 144858), (282, 72429), (329, 62082), (423, 48286), (658, 31041), (846, 24143), (987, 20694), (1974, 10347), (2961, 6898), (3449, 5922)]