1200000020

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{397351}}^1$

素因数の和:397511

約数の個数: 24

約数和(自身を含む): 2536695168

約数和(自身を除く): 1336695148

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 397351, 794702, 1589404, 1986755, 3973510, 7947020, 60000001, 120000002, 240000004, 300000005, 600000010, 1200000020]

約数ペア:

[(1, 1200000020), (2, 600000010), (4, 300000005), (5, 240000004), (10, 120000002), (20, 60000001), (151, 7947020), (302, 3973510), (604, 1986755), (755, 1589404), (1510, 794702), (3020, 397351)]