20661290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9349}}^1$

素因数の和:9386

約数の個数: 32

約数和(自身を含む): 42411600

約数和(自身を除く): 21750310

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9349, 18698, 46745, 93490, 121537, 158933, 243074, 317866, 607685, 794665, 1215370, 1589330, 2066129, 4132258, 10330645, 20661290]

約数ペア:

[(1, 20661290), (2, 10330645), (5, 4132258), (10, 2066129), (13, 1589330), (17, 1215370), (26, 794665), (34, 607685), (65, 317866), (85, 243074), (130, 158933), (170, 121537), (221, 93490), (442, 46745), (1105, 18698), (2210, 9349)]