27991404

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{277}}^1\times {\mathrm{401}}^1$

素因数の和:695

約数の個数: 72

約数和(自身を含む): 81358368

約数和(自身を除く): 53366964

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 277, 401, 554, 802, 831, 1108, 1203, 1604, 1662, 1939, 2406, 2493, 2807, 3324, 3609, 3878, 4812, 4986, 5614, 5817, 7218, 7756, 8421, 9972, 11228, 11634, 14436, 16842, 17451, 23268, 25263, 33684, 34902, 50526, 69804, 101052, 111077, 222154, 333231, 444308, 666462, 777539, 999693, 1332924, 1555078, 1999386, 2332617, 3110156, 3998772, 4665234, 6997851, 9330468, 13995702, 27991404]

約数ペア:

[(1, 27991404), (2, 13995702), (3, 9330468), (4, 6997851), (6, 4665234), (7, 3998772), (9, 3110156), (12, 2332617), (14, 1999386), (18, 1555078), (21, 1332924), (28, 999693), (36, 777539), (42, 666462), (63, 444308), (84, 333231), (126, 222154), (252, 111077), (277, 101052), (401, 69804), (554, 50526), (802, 34902), (831, 33684), (1108, 25263), (1203, 23268), (1604, 17451), (1662, 16842), (1939, 14436), (2406, 11634), (2493, 11228), (2807, 9972), (3324, 8421), (3609, 7756), (3878, 7218), (4812, 5817), (4986, 5614)]