1656880

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:301

約数の個数: 40

約数和(自身を含む): 3906000

約数和(自身を除く): 2249120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 149, 278, 298, 556, 596, 695, 745, 1112, 1192, 1390, 1490, 2224, 2384, 2780, 2980, 5560, 5960, 11120, 11920, 20711, 41422, 82844, 103555, 165688, 207110, 331376, 414220, 828440, 1656880]

約数ペア:

[(1, 1656880), (2, 828440), (4, 414220), (5, 331376), (8, 207110), (10, 165688), (16, 103555), (20, 82844), (40, 41422), (80, 20711), (139, 11920), (149, 11120), (278, 5960), (298, 5560), (556, 2980), (596, 2780), (695, 2384), (745, 2224), (1112, 1490), (1192, 1390)]