19259919

素因数分解:

$3^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{983}}^1$

素因数の和:1307

約数の個数: 24

約数和(自身を含む): 31928832

約数和(自身を除く): 12668913

約数列:

[1, 3, 7, 9, 21, 63, 311, 933, 983, 2177, 2799, 2949, 6531, 6881, 8847, 19593, 20643, 61929, 305713, 917139, 2139991, 2751417, 6419973, 19259919]

約数ペア:

[(1, 19259919), (3, 6419973), (7, 2751417), (9, 2139991), (21, 917139), (63, 305713), (311, 61929), (933, 20643), (983, 19593), (2177, 8847), (2799, 6881), (2949, 6531)]