18910280

素因数分解:

$2^3\times 5^1\times {\mathrm{233}}^1\times {\mathrm{2029}}^1$

素因数の和:2273

約数の個数: 32

約数和(自身を含む): 42751800

約数和(自身を除く): 23841520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 233, 466, 932, 1165, 1864, 2029, 2330, 4058, 4660, 8116, 9320, 10145, 16232, 20290, 40580, 81160, 472757, 945514, 1891028, 2363785, 3782056, 4727570, 9455140, 18910280]

約数ペア:

[(1, 18910280), (2, 9455140), (4, 4727570), (5, 3782056), (8, 2363785), (10, 1891028), (20, 945514), (40, 472757), (233, 81160), (466, 40580), (932, 20290), (1165, 16232), (1864, 10145), (2029, 9320), (2330, 8116), (4058, 4660)]