18572920

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1493}}^1$

素因数の和:1815

約数の個数: 32

約数和(自身を含む): 41951520

約数和(自身を除く): 23378600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1493, 1555, 2488, 2986, 3110, 5972, 6220, 7465, 11944, 12440, 14930, 29860, 59720, 464323, 928646, 1857292, 2321615, 3714584, 4643230, 9286460, 18572920]

約数ペア:

[(1, 18572920), (2, 9286460), (4, 4643230), (5, 3714584), (8, 2321615), (10, 1857292), (20, 928646), (40, 464323), (311, 59720), (622, 29860), (1244, 14930), (1493, 12440), (1555, 11944), (2488, 7465), (2986, 6220), (3110, 5972)]