19917684

素因数分解:

$2^2\times 3^3\times {\mathrm{311}}^1\times {\mathrm{593}}^1$

素因数の和:917

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 31974156

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 311, 593, 622, 933, 1186, 1244, 1779, 1866, 2372, 2799, 3558, 3732, 5337, 5598, 7116, 8397, 10674, 11196, 16011, 16794, 21348, 32022, 33588, 64044, 184423, 368846, 553269, 737692, 1106538, 1659807, 2213076, 3319614, 4979421, 6639228, 9958842, 19917684]

約数ペア:

[(1, 19917684), (2, 9958842), (3, 6639228), (4, 4979421), (6, 3319614), (9, 2213076), (12, 1659807), (18, 1106538), (27, 737692), (36, 553269), (54, 368846), (108, 184423), (311, 64044), (593, 33588), (622, 32022), (933, 21348), (1186, 16794), (1244, 16011), (1779, 11196), (1866, 10674), (2372, 8397), (2799, 7116), (3558, 5598), (3732, 5337)]