21279090

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{947}}^1$

素因数の和:1071

約数の個数: 64

約数和(自身を含む): 58973184

約数和(自身を除く): 37694094

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 107, 210, 214, 321, 535, 642, 749, 947, 1070, 1498, 1605, 1894, 2247, 2841, 3210, 3745, 4494, 4735, 5682, 6629, 7490, 9470, 11235, 13258, 14205, 19887, 22470, 28410, 33145, 39774, 66290, 99435, 101329, 198870, 202658, 303987, 506645, 607974, 709303, 1013290, 1418606, 1519935, 2127909, 3039870, 3546515, 4255818, 7093030, 10639545, 21279090]

約数ペア:

[(1, 21279090), (2, 10639545), (3, 7093030), (5, 4255818), (6, 3546515), (7, 3039870), (10, 2127909), (14, 1519935), (15, 1418606), (21, 1013290), (30, 709303), (35, 607974), (42, 506645), (70, 303987), (105, 202658), (107, 198870), (210, 101329), (214, 99435), (321, 66290), (535, 39774), (642, 33145), (749, 28410), (947, 22470), (1070, 19887), (1498, 14205), (1605, 13258), (1894, 11235), (2247, 9470), (2841, 7490), (3210, 6629), (3745, 5682), (4494, 4735)]