16621540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{63929}}^1$

素因数の和:63951

約数の個数: 24

約数和(自身を含む): 37590840

約数和(自身を除く): 20969300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 63929, 127858, 255716, 319645, 639290, 831077, 1278580, 1662154, 3324308, 4155385, 8310770, 16621540]

約数ペア:

[(1, 16621540), (2, 8310770), (4, 4155385), (5, 3324308), (10, 1662154), (13, 1278580), (20, 831077), (26, 639290), (52, 319645), (65, 255716), (130, 127858), (260, 63929)]