21557510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1193}}^1$

素因数の和:1352

約数の個数: 32

約数和(自身を含む): 42124320

約数和(自身を除く): 20566810

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 139, 278, 695, 1193, 1390, 1807, 2386, 3614, 5965, 9035, 11930, 15509, 18070, 31018, 77545, 155090, 165827, 331654, 829135, 1658270, 2155751, 4311502, 10778755, 21557510]

約数ペア:

[(1, 21557510), (2, 10778755), (5, 4311502), (10, 2155751), (13, 1658270), (26, 829135), (65, 331654), (130, 165827), (139, 155090), (278, 77545), (695, 31018), (1193, 18070), (1390, 15509), (1807, 11930), (2386, 9035), (3614, 5965)]