20100120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:257

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 45218280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 59, 60, 68, 85, 102, 118, 120, 136, 167, 170, 177, 204, 236, 255, 295, 334, 340, 354, 408, 472, 501, 510, 590, 668, 680, 708, 835, 885, 1002, 1003, 1020, 1180, 1336, 1416, 1670, 1770, 2004, 2006, 2040, 2360, 2505, 2839, 3009, 3340, 3540, 4008, 4012, 5010, 5015, 5678, 6018, 6680, 7080, 8024, 8517, 9853, 10020, 10030, 11356, 12036, 14195, 15045, 17034, 19706, 20040, 20060, 22712, 24072, 28390, 29559, 30090, 34068, 39412, 40120, 42585, 49265, 56780, 59118, 60180, 68136, 78824, 85170, 98530, 113560, 118236, 120360, 147795, 167501, 170340, 197060, 236472, 295590, 335002, 340680, 394120, 502503, 591180, 670004, 837505, 1005006, 1182360, 1340008, 1675010, 2010012, 2512515, 3350020, 4020024, 5025030, 6700040, 10050060, 20100120]

約数ペア:

[(1, 20100120), (2, 10050060), (3, 6700040), (4, 5025030), (5, 4020024), (6, 3350020), (8, 2512515), (10, 2010012), (12, 1675010), (15, 1340008), (17, 1182360), (20, 1005006), (24, 837505), (30, 670004), (34, 591180), (40, 502503), (51, 394120), (59, 340680), (60, 335002), (68, 295590), (85, 236472), (102, 197060), (118, 170340), (120, 167501), (136, 147795), (167, 120360), (170, 118236), (177, 113560), (204, 98530), (236, 85170), (255, 78824), (295, 68136), (334, 60180), (340, 59118), (354, 56780), (408, 49265), (472, 42585), (501, 40120), (510, 39412), (590, 34068), (668, 30090), (680, 29559), (708, 28390), (835, 24072), (885, 22712), (1002, 20060), (1003, 20040), (1020, 19706), (1180, 17034), (1336, 15045), (1416, 14195), (1670, 12036), (1770, 11356), (2004, 10030), (2006, 10020), (2040, 9853), (2360, 8517), (2505, 8024), (2839, 7080), (3009, 6680), (3340, 6018), (3540, 5678), (4008, 5015), (4012, 5010)]