81212000

素因数分解:

$2^5\times 5^3\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:361

約数の個数: 96

約数和(自身を含む): 202849920

約数和(自身を除く): 121637920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 79, 80, 100, 125, 158, 160, 200, 250, 257, 316, 395, 400, 500, 514, 632, 790, 800, 1000, 1028, 1264, 1285, 1580, 1975, 2000, 2056, 2528, 2570, 3160, 3950, 4000, 4112, 5140, 6320, 6425, 7900, 8224, 9875, 10280, 12640, 12850, 15800, 19750, 20303, 20560, 25700, 31600, 32125, 39500, 40606, 41120, 51400, 63200, 64250, 79000, 81212, 101515, 102800, 128500, 158000, 162424, 203030, 205600, 257000, 316000, 324848, 406060, 507575, 514000, 649696, 812120, 1015150, 1028000, 1624240, 2030300, 2537875, 3248480, 4060600, 5075750, 8121200, 10151500, 16242400, 20303000, 40606000, 81212000]

約数ペア:

[(1, 81212000), (2, 40606000), (4, 20303000), (5, 16242400), (8, 10151500), (10, 8121200), (16, 5075750), (20, 4060600), (25, 3248480), (32, 2537875), (40, 2030300), (50, 1624240), (79, 1028000), (80, 1015150), (100, 812120), (125, 649696), (158, 514000), (160, 507575), (200, 406060), (250, 324848), (257, 316000), (316, 257000), (395, 205600), (400, 203030), (500, 162424), (514, 158000), (632, 128500), (790, 102800), (800, 101515), (1000, 81212), (1028, 79000), (1264, 64250), (1285, 63200), (1580, 51400), (1975, 41120), (2000, 40606), (2056, 39500), (2528, 32125), (2570, 31600), (3160, 25700), (3950, 20560), (4000, 20303), (4112, 19750), (5140, 15800), (6320, 12850), (6425, 12640), (7900, 10280), (8224, 9875)]