20876371840

素因数分解:

$2^7\times 5^1\times {\mathrm{3259}}^1\times {\mathrm{10009}}^1$

素因数の和:13287

約数の個数: 64

約数和(自身を含む): 49927878000

約数和(自身を除く): 29051506160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 3259, 6518, 10009, 13036, 16295, 20018, 26072, 32590, 40036, 50045, 52144, 65180, 80072, 100090, 104288, 130360, 160144, 200180, 208576, 260720, 320288, 400360, 417152, 521440, 640576, 800720, 1042880, 1281152, 1601440, 2085760, 3202880, 6405760, 32619331, 65238662, 130477324, 163096655, 260954648, 326193310, 521909296, 652386620, 1043818592, 1304773240, 2087637184, 2609546480, 4175274368, 5219092960, 10438185920, 20876371840]

約数ペア:

[(1, 20876371840), (2, 10438185920), (4, 5219092960), (5, 4175274368), (8, 2609546480), (10, 2087637184), (16, 1304773240), (20, 1043818592), (32, 652386620), (40, 521909296), (64, 326193310), (80, 260954648), (128, 163096655), (160, 130477324), (320, 65238662), (640, 32619331), (3259, 6405760), (6518, 3202880), (10009, 2085760), (13036, 1601440), (16295, 1281152), (20018, 1042880), (26072, 800720), (32590, 640576), (40036, 521440), (50045, 417152), (52144, 400360), (65180, 320288), (80072, 260720), (100090, 208576), (104288, 200180), (130360, 160144)]