21787308

素因数分解:

$2^2\times 3^2\times {\mathrm{769}}^1\times {\mathrm{787}}^1$

素因数の和:1566

約数の個数: 36

約数和(自身を含む): 55215160

約数和(自身を除く): 33427852

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 769, 787, 1538, 1574, 2307, 2361, 3076, 3148, 4614, 4722, 6921, 7083, 9228, 9444, 13842, 14166, 27684, 28332, 605203, 1210406, 1815609, 2420812, 3631218, 5446827, 7262436, 10893654, 21787308]

約数ペア:

[(1, 21787308), (2, 10893654), (3, 7262436), (4, 5446827), (6, 3631218), (9, 2420812), (12, 1815609), (18, 1210406), (36, 605203), (769, 28332), (787, 27684), (1538, 14166), (1574, 13842), (2307, 9444), (2361, 9228), (3076, 7083), (3148, 6921), (4614, 4722)]