20020780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77003}}^1$

素因数の和:77025

約数の個数: 24

約数和(自身を含む): 45278352

約数和(自身を除く): 25257572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77003, 154006, 308012, 385015, 770030, 1001039, 1540060, 2002078, 4004156, 5005195, 10010390, 20020780]

約数ペア:

[(1, 20020780), (2, 10010390), (4, 5005195), (5, 4004156), (10, 2002078), (13, 1540060), (20, 1001039), (26, 770030), (52, 385015), (65, 308012), (130, 154006), (260, 77003)]