20313520

素因数分解:

$2^4\times 5^1\times {\mathrm{253919}}^1$

素因数の和:253932

約数の個数: 20

約数和(自身を含む): 47229120

約数和(自身を除く): 26915600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253919, 507838, 1015676, 1269595, 2031352, 2539190, 4062704, 5078380, 10156760, 20313520]

約数ペア:

[(1, 20313520), (2, 10156760), (4, 5078380), (5, 4062704), (8, 2539190), (10, 2031352), (16, 1269595), (20, 1015676), (40, 507838), (80, 253919)]