19994180

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4483}}^1$

素因数の和:4715

約数の個数: 24

約数和(自身を含む): 42185472

約数和(自身を除く): 22191292

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4483, 8966, 17932, 22415, 44830, 89660, 999709, 1999418, 3998836, 4998545, 9997090, 19994180]

約数ペア:

[(1, 19994180), (2, 9997090), (4, 4998545), (5, 3998836), (10, 1999418), (20, 999709), (223, 89660), (446, 44830), (892, 22415), (1115, 17932), (2230, 8966), (4460, 4483)]