20951448

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{401}}^1$

素因数の和:728

約数の個数: 64

約数和(自身を含む): 60203520

約数和(自身を除く): 39252072

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 311, 401, 622, 802, 933, 1203, 1244, 1604, 1866, 2177, 2406, 2488, 2807, 3208, 3732, 4354, 4812, 5614, 6531, 7464, 8421, 8708, 9624, 11228, 13062, 16842, 17416, 22456, 26124, 33684, 52248, 67368, 124711, 249422, 374133, 498844, 748266, 872977, 997688, 1496532, 1745954, 2618931, 2993064, 3491908, 5237862, 6983816, 10475724, 20951448]

約数ペア:

[(1, 20951448), (2, 10475724), (3, 6983816), (4, 5237862), (6, 3491908), (7, 2993064), (8, 2618931), (12, 1745954), (14, 1496532), (21, 997688), (24, 872977), (28, 748266), (42, 498844), (56, 374133), (84, 249422), (168, 124711), (311, 67368), (401, 52248), (622, 33684), (802, 26124), (933, 22456), (1203, 17416), (1244, 16842), (1604, 13062), (1866, 11228), (2177, 9624), (2406, 8708), (2488, 8421), (2807, 7464), (3208, 6531), (3732, 5614), (4354, 4812)]