21208136690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163139513}}^1$

素因数の和:163139533

約数の個数: 16

約数和(自身を含む): 41111157528

約数和(自身を除く): 19903020838

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163139513, 326279026, 815697565, 1631395130, 2120813669, 4241627338, 10604068345, 21208136690]

約数ペア:

[(1, 21208136690), (2, 10604068345), (5, 4241627338), (10, 2120813669), (13, 1631395130), (26, 815697565), (65, 326279026), (130, 163139513)]