16666420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{719}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 20831180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 610, 719, 1159, 1220, 1438, 2318, 2876, 3595, 4636, 5795, 7190, 11590, 13661, 14380, 23180, 27322, 43859, 54644, 68305, 87718, 136610, 175436, 219295, 273220, 438590, 833321, 877180, 1666642, 3333284, 4166605, 8333210, 16666420]

約数ペア:

[(1, 16666420), (2, 8333210), (4, 4166605), (5, 3333284), (10, 1666642), (19, 877180), (20, 833321), (38, 438590), (61, 273220), (76, 219295), (95, 175436), (122, 136610), (190, 87718), (244, 68305), (305, 54644), (380, 43859), (610, 27322), (719, 23180), (1159, 14380), (1220, 13661), (1438, 11590), (2318, 7190), (2876, 5795), (3595, 4636)]