21143020

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{7001}}^1$

素因数の和:7161

約数の個数: 24

約数和(自身を含む): 44700768

約数和(自身を除く): 23557748

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 7001, 14002, 28004, 35005, 70010, 140020, 1057151, 2114302, 4228604, 5285755, 10571510, 21143020]

約数ペア:

[(1, 21143020), (2, 10571510), (4, 5285755), (5, 4228604), (10, 2114302), (20, 1057151), (151, 140020), (302, 70010), (604, 35005), (755, 28004), (1510, 14002), (3020, 7001)]