20156500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1$

素因数の和:482

約数の個数: 96

約数和(自身を含む): 54302976

約数和(自身を除く): 34146476

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 125, 130, 140, 175, 182, 250, 260, 325, 350, 364, 443, 455, 500, 650, 700, 875, 886, 910, 1300, 1625, 1750, 1772, 1820, 2215, 2275, 3101, 3250, 3500, 4430, 4550, 5759, 6202, 6500, 8860, 9100, 11075, 11375, 11518, 12404, 15505, 22150, 22750, 23036, 28795, 31010, 40313, 44300, 45500, 55375, 57590, 62020, 77525, 80626, 110750, 115180, 143975, 155050, 161252, 201565, 221500, 287950, 310100, 387625, 403130, 575900, 719875, 775250, 806260, 1007825, 1439750, 1550500, 2015650, 2879500, 4031300, 5039125, 10078250, 20156500]

約数ペア:

[(1, 20156500), (2, 10078250), (4, 5039125), (5, 4031300), (7, 2879500), (10, 2015650), (13, 1550500), (14, 1439750), (20, 1007825), (25, 806260), (26, 775250), (28, 719875), (35, 575900), (50, 403130), (52, 387625), (65, 310100), (70, 287950), (91, 221500), (100, 201565), (125, 161252), (130, 155050), (140, 143975), (175, 115180), (182, 110750), (250, 80626), (260, 77525), (325, 62020), (350, 57590), (364, 55375), (443, 45500), (455, 44300), (500, 40313), (650, 31010), (700, 28795), (875, 23036), (886, 22750), (910, 22150), (1300, 15505), (1625, 12404), (1750, 11518), (1772, 11375), (1820, 11075), (2215, 9100), (2275, 8860), (3101, 6500), (3250, 6202), (3500, 5759), (4430, 4550)]