21453510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55009}}^1$

素因数の和:55032

約数の個数: 32

約数和(自身を含む): 55450080

約数和(自身を除く): 33996570

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55009, 110018, 165027, 275045, 330054, 550090, 715117, 825135, 1430234, 1650270, 2145351, 3575585, 4290702, 7151170, 10726755, 21453510]

約数ペア:

[(1, 21453510), (2, 10726755), (3, 7151170), (5, 4290702), (6, 3575585), (10, 2145351), (13, 1650270), (15, 1430234), (26, 825135), (30, 715117), (39, 550090), (65, 330054), (78, 275045), (130, 165027), (195, 110018), (390, 55009)]