20656823720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39724661}}^1$

素因数の和:39724685

約数の個数: 32

約数和(自身を含む): 50053074120

約数和(自身を除く): 29396250400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39724661, 79449322, 158898644, 198623305, 317797288, 397246610, 516420593, 794493220, 1032841186, 1588986440, 2065682372, 2582102965, 4131364744, 5164205930, 10328411860, 20656823720]

約数ペア:

[(1, 20656823720), (2, 10328411860), (4, 5164205930), (5, 4131364744), (8, 2582102965), (10, 2065682372), (13, 1588986440), (20, 1032841186), (26, 794493220), (40, 516420593), (52, 397246610), (65, 317797288), (104, 198623305), (130, 158898644), (260, 79449322), (520, 39724661)]