21441028

素因数分解:

$2^2\times 7^2\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:944

約数の個数: 36

約数和(自身を含む): 44017680

約数和(自身を除く): 22576652

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 139, 196, 278, 556, 787, 973, 1574, 1946, 3148, 3892, 5509, 6811, 11018, 13622, 22036, 27244, 38563, 77126, 109393, 154252, 218786, 437572, 765751, 1531502, 3063004, 5360257, 10720514, 21441028]

約数ペア:

[(1, 21441028), (2, 10720514), (4, 5360257), (7, 3063004), (14, 1531502), (28, 765751), (49, 437572), (98, 218786), (139, 154252), (196, 109393), (278, 77126), (556, 38563), (787, 27244), (973, 22036), (1574, 13622), (1946, 11018), (3148, 6811), (3892, 5509)]