638687530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4912981}}^1$

素因数の和:4913001

約数の個数: 16

約数和(自身を含む): 1238071464

約数和(自身を除く): 599383934

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 4912981, 9825962, 24564905, 49129810, 63868753, 127737506, 319343765, 638687530]

約数ペア:

[(1, 638687530), (2, 319343765), (5, 127737506), (10, 63868753), (13, 49129810), (26, 24564905), (65, 9825962), (130, 4912981)]