18058520

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{683}}^1$

素因数の和:1355

約数の個数: 32

約数和(自身を含む): 40752720

約数和(自身を除く): 22694200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 683, 1322, 1366, 2644, 2732, 3305, 3415, 5288, 5464, 6610, 6830, 13220, 13660, 26440, 27320, 451463, 902926, 1805852, 2257315, 3611704, 4514630, 9029260, 18058520]

約数ペア:

[(1, 18058520), (2, 9029260), (4, 4514630), (5, 3611704), (8, 2257315), (10, 1805852), (20, 902926), (40, 451463), (661, 27320), (683, 26440), (1322, 13660), (1366, 13220), (2644, 6830), (2732, 6610), (3305, 5464), (3415, 5288)]