21779810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167537}}^1$

素因数の和:167557

約数の個数: 16

約数和(自身を含む): 42219576

約数和(自身を除く): 20439766

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 167537, 335074, 837685, 1675370, 2177981, 4355962, 10889905, 21779810]

約数ペア:

[(1, 21779810), (2, 10889905), (5, 4355962), (10, 2177981), (13, 1675370), (26, 837685), (65, 335074), (130, 167537)]