18918260

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4483}}^1$

素因数の和:4703

約数の個数: 24

約数和(自身を含む): 39925536

約数和(自身を除く): 21007276

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4483, 8966, 17932, 22415, 44830, 89660, 945913, 1891826, 3783652, 4729565, 9459130, 18918260]

約数ペア:

[(1, 18918260), (2, 9459130), (4, 4729565), (5, 3783652), (10, 1891826), (20, 945913), (211, 89660), (422, 44830), (844, 22415), (1055, 17932), (2110, 8966), (4220, 4483)]