20197600540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{402503}}^1$

素因数の和:402718

約数の個数: 48

約数和(自身を含む): 45914436288

約数和(自身を除く): 25716835748

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 193, 260, 386, 772, 965, 1930, 2509, 3860, 5018, 10036, 12545, 25090, 50180, 402503, 805006, 1610012, 2012515, 4025030, 5232539, 8050060, 10465078, 20930156, 26162695, 52325390, 77683079, 104650780, 155366158, 310732316, 388415395, 776830790, 1009880027, 1553661580, 2019760054, 4039520108, 5049400135, 10098800270, 20197600540]

約数ペア:

[(1, 20197600540), (2, 10098800270), (4, 5049400135), (5, 4039520108), (10, 2019760054), (13, 1553661580), (20, 1009880027), (26, 776830790), (52, 388415395), (65, 310732316), (130, 155366158), (193, 104650780), (260, 77683079), (386, 52325390), (772, 26162695), (965, 20930156), (1930, 10465078), (2509, 8050060), (3860, 5232539), (5018, 4025030), (10036, 2012515), (12545, 1610012), (25090, 805006), (50180, 402503)]