21458060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82531}}^1$

素因数の和:82553

約数の個数: 24

約数和(自身を含む): 48528816

約数和(自身を除く): 27070756

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82531, 165062, 330124, 412655, 825310, 1072903, 1650620, 2145806, 4291612, 5364515, 10729030, 21458060]

約数ペア:

[(1, 21458060), (2, 10729030), (4, 5364515), (5, 4291612), (10, 2145806), (13, 1650620), (20, 1072903), (26, 825310), (52, 412655), (65, 330124), (130, 165062), (260, 82531)]