2005203980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7712323}}^1$

素因数の和:7712345

約数の個数: 24

約数和(自身を含む): 4534846512

約数和(自身を除く): 2529642532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 7712323, 15424646, 30849292, 38561615, 77123230, 100260199, 154246460, 200520398, 401040796, 501300995, 1002601990, 2005203980]

約数ペア:

[(1, 2005203980), (2, 1002601990), (4, 501300995), (5, 401040796), (10, 200520398), (13, 154246460), (20, 100260199), (26, 77123230), (52, 38561615), (65, 30849292), (130, 15424646), (260, 7712323)]