25551998

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:360

約数の個数: 32

約数和(自身を含む): 42240000

約数和(自身を除く): 16688002

約数列:

[1, 2, 19, 31, 38, 62, 109, 199, 218, 398, 589, 1178, 2071, 3379, 3781, 4142, 6169, 6758, 7562, 12338, 21691, 43382, 64201, 117211, 128402, 234422, 412129, 672421, 824258, 1344842, 12775999, 25551998]

約数ペア:

[(1, 25551998), (2, 12775999), (19, 1344842), (31, 824258), (38, 672421), (62, 412129), (109, 234422), (199, 128402), (218, 117211), (398, 64201), (589, 43382), (1178, 21691), (2071, 12338), (3379, 7562), (3781, 6758), (4142, 6169)]