20561436

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{587}}^1$

素因数の和:743

約数の個数: 72

約数和(自身を含む): 59928960

約数和(自身を除く): 39367524

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 139, 252, 278, 417, 556, 587, 834, 973, 1174, 1251, 1668, 1761, 1946, 2348, 2502, 2919, 3522, 3892, 4109, 5004, 5283, 5838, 7044, 8218, 8757, 10566, 11676, 12327, 16436, 17514, 21132, 24654, 35028, 36981, 49308, 73962, 81593, 147924, 163186, 244779, 326372, 489558, 571151, 734337, 979116, 1142302, 1468674, 1713453, 2284604, 2937348, 3426906, 5140359, 6853812, 10280718, 20561436]

約数ペア:

[(1, 20561436), (2, 10280718), (3, 6853812), (4, 5140359), (6, 3426906), (7, 2937348), (9, 2284604), (12, 1713453), (14, 1468674), (18, 1142302), (21, 979116), (28, 734337), (36, 571151), (42, 489558), (63, 326372), (84, 244779), (126, 163186), (139, 147924), (252, 81593), (278, 73962), (417, 49308), (556, 36981), (587, 35028), (834, 24654), (973, 21132), (1174, 17514), (1251, 16436), (1668, 12327), (1761, 11676), (1946, 10566), (2348, 8757), (2502, 8218), (2919, 7044), (3522, 5838), (3892, 5283), (4109, 5004)]