21821436

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6661}}^1$

素因数の和:6691

約数の個数: 72

約数和(自身を含む): 67899104

約数和(自身を除く): 46077668

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 182, 234, 252, 273, 364, 468, 546, 819, 1092, 1638, 3276, 6661, 13322, 19983, 26644, 39966, 46627, 59949, 79932, 86593, 93254, 119898, 139881, 173186, 186508, 239796, 259779, 279762, 346372, 419643, 519558, 559524, 606151, 779337, 839286, 1039116, 1212302, 1558674, 1678572, 1818453, 2424604, 3117348, 3636906, 5455359, 7273812, 10910718, 21821436]

約数ペア:

[(1, 21821436), (2, 10910718), (3, 7273812), (4, 5455359), (6, 3636906), (7, 3117348), (9, 2424604), (12, 1818453), (13, 1678572), (14, 1558674), (18, 1212302), (21, 1039116), (26, 839286), (28, 779337), (36, 606151), (39, 559524), (42, 519558), (52, 419643), (63, 346372), (78, 279762), (84, 259779), (91, 239796), (117, 186508), (126, 173186), (156, 139881), (182, 119898), (234, 93254), (252, 86593), (273, 79932), (364, 59949), (468, 46627), (546, 39966), (819, 26644), (1092, 19983), (1638, 13322), (3276, 6661)]