19926320

素因数分解:

$2^4\times 5^1\times {\mathrm{249079}}^1$

素因数の和:249092

約数の個数: 20

約数和(自身を含む): 46328880

約数和(自身を除く): 26402560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 249079, 498158, 996316, 1245395, 1992632, 2490790, 3985264, 4981580, 9963160, 19926320]

約数ペア:

[(1, 19926320), (2, 9963160), (4, 4981580), (5, 3985264), (8, 2490790), (10, 1992632), (16, 1245395), (20, 996316), (40, 498158), (80, 249079)]