21454030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2089}}^1$

素因数の和:2188

約数の個数: 32

約数和(自身を含む): 42134400

約数和(自身を除く): 20680370

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2054, 2089, 4178, 5135, 10270, 10445, 20890, 27157, 54314, 135785, 165031, 271570, 330062, 825155, 1650310, 2145403, 4290806, 10727015, 21454030]

約数ペア:

[(1, 21454030), (2, 10727015), (5, 4290806), (10, 2145403), (13, 1650310), (26, 825155), (65, 330062), (79, 271570), (130, 165031), (158, 135785), (395, 54314), (790, 27157), (1027, 20890), (2054, 10445), (2089, 10270), (4178, 5135)]