21031784

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{773}}^1$

素因数の和:977

約数の個数: 32

約数和(自身を含む): 41796000

約数和(自身を除く): 20764216

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 179, 358, 716, 773, 1432, 1546, 3092, 3401, 6184, 6802, 13604, 14687, 27208, 29374, 58748, 117496, 138367, 276734, 553468, 1106936, 2628973, 5257946, 10515892, 21031784]

約数ペア:

[(1, 21031784), (2, 10515892), (4, 5257946), (8, 2628973), (19, 1106936), (38, 553468), (76, 276734), (152, 138367), (179, 117496), (358, 58748), (716, 29374), (773, 27208), (1432, 14687), (1546, 13604), (3092, 6802), (3401, 6184)]