29780980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{719}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 66528000

約数和(自身を除く): 36747020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 719, 1090, 1438, 2071, 2180, 2876, 3595, 4142, 7190, 8284, 10355, 13661, 14380, 20710, 27322, 41420, 54644, 68305, 78371, 136610, 156742, 273220, 313484, 391855, 783710, 1489049, 1567420, 2978098, 5956196, 7445245, 14890490, 29780980]

約数ペア:

[(1, 29780980), (2, 14890490), (4, 7445245), (5, 5956196), (10, 2978098), (19, 1567420), (20, 1489049), (38, 783710), (76, 391855), (95, 313484), (109, 273220), (190, 156742), (218, 136610), (380, 78371), (436, 68305), (545, 54644), (719, 41420), (1090, 27322), (1438, 20710), (2071, 14380), (2180, 13661), (2876, 10355), (3595, 8284), (4142, 7190)]