27983480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{719}}^1$

素因数の和:876

約数の個数: 64

約数和(自身を含む): 72576000

約数和(自身を除く): 44592520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 719, 973, 1112, 1390, 1438, 1946, 2780, 2876, 3595, 3892, 4865, 5033, 5560, 5752, 7190, 7784, 9730, 10066, 14380, 19460, 20132, 25165, 28760, 38920, 40264, 50330, 99941, 100660, 199882, 201320, 399764, 499705, 699587, 799528, 999410, 1399174, 1998820, 2798348, 3497935, 3997640, 5596696, 6995870, 13991740, 27983480]

約数ペア:

[(1, 27983480), (2, 13991740), (4, 6995870), (5, 5596696), (7, 3997640), (8, 3497935), (10, 2798348), (14, 1998820), (20, 1399174), (28, 999410), (35, 799528), (40, 699587), (56, 499705), (70, 399764), (139, 201320), (140, 199882), (278, 100660), (280, 99941), (556, 50330), (695, 40264), (719, 38920), (973, 28760), (1112, 25165), (1390, 20132), (1438, 19460), (1946, 14380), (2780, 10066), (2876, 9730), (3595, 7784), (3892, 7190), (4865, 5752), (5033, 5560)]