19712080

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3119}}^1$

素因数の和:3211

約数の個数: 40

約数和(自身を含む): 46425600

約数和(自身を除く): 26713520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3119, 3160, 6238, 6320, 12476, 15595, 24952, 31190, 49904, 62380, 124760, 246401, 249520, 492802, 985604, 1232005, 1971208, 2464010, 3942416, 4928020, 9856040, 19712080]

約数ペア:

[(1, 19712080), (2, 9856040), (4, 4928020), (5, 3942416), (8, 2464010), (10, 1971208), (16, 1232005), (20, 985604), (40, 492802), (79, 249520), (80, 246401), (158, 124760), (316, 62380), (395, 49904), (632, 31190), (790, 24952), (1264, 15595), (1580, 12476), (3119, 6320), (3160, 6238)]