21118965

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1447}}^1$

素因数の和:1601

約数の個数: 32

約数和(自身を含む): 38922240

約数和(自身を除く): 17803275

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 139, 417, 695, 973, 1447, 2085, 2919, 4341, 4865, 7235, 10129, 14595, 21705, 30387, 50645, 151935, 201133, 603399, 1005665, 1407931, 3016995, 4223793, 7039655, 21118965]

約数ペア:

[(1, 21118965), (3, 7039655), (5, 4223793), (7, 3016995), (15, 1407931), (21, 1005665), (35, 603399), (105, 201133), (139, 151935), (417, 50645), (695, 30387), (973, 21705), (1447, 14595), (2085, 10129), (2919, 7235), (4341, 4865)]