20105841280

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{56809}}^1$

素因数の和:56914

約数の個数: 128

約数和(自身を含む): 55628352000

約数和(自身を除く): 35522510720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 79, 80, 112, 128, 140, 158, 160, 224, 280, 316, 320, 395, 448, 553, 560, 632, 640, 790, 896, 1106, 1120, 1264, 1580, 2212, 2240, 2528, 2765, 3160, 4424, 4480, 5056, 5530, 6320, 8848, 10112, 11060, 12640, 17696, 22120, 25280, 35392, 44240, 50560, 56809, 70784, 88480, 113618, 176960, 227236, 284045, 353920, 397663, 454472, 568090, 795326, 908944, 1136180, 1590652, 1817888, 1988315, 2272360, 3181304, 3635776, 3976630, 4487911, 4544720, 6362608, 7271552, 7953260, 8975822, 9089440, 12725216, 15906520, 17951644, 18178880, 22439555, 25450432, 31415377, 31813040, 35903288, 36357760, 44879110, 50900864, 62830754, 63626080, 71806576, 89758220, 125661508, 127252160, 143613152, 157076885, 179516440, 251323016, 254504320, 287226304, 314153770, 359032880, 502646032, 574452608, 628307540, 718065760, 1005292064, 1256615080, 1436131520, 2010584128, 2513230160, 2872263040, 4021168256, 5026460320, 10052920640, 20105841280]

約数ペア:

[(1, 20105841280), (2, 10052920640), (4, 5026460320), (5, 4021168256), (7, 2872263040), (8, 2513230160), (10, 2010584128), (14, 1436131520), (16, 1256615080), (20, 1005292064), (28, 718065760), (32, 628307540), (35, 574452608), (40, 502646032), (56, 359032880), (64, 314153770), (70, 287226304), (79, 254504320), (80, 251323016), (112, 179516440), (128, 157076885), (140, 143613152), (158, 127252160), (160, 125661508), (224, 89758220), (280, 71806576), (316, 63626080), (320, 62830754), (395, 50900864), (448, 44879110), (553, 36357760), (560, 35903288), (632, 31813040), (640, 31415377), (790, 25450432), (896, 22439555), (1106, 18178880), (1120, 17951644), (1264, 15906520), (1580, 12725216), (2212, 9089440), (2240, 8975822), (2528, 7953260), (2765, 7271552), (3160, 6362608), (4424, 4544720), (4480, 4487911), (5056, 3976630), (5530, 3635776), (6320, 3181304), (8848, 2272360), (10112, 1988315), (11060, 1817888), (12640, 1590652), (17696, 1136180), (22120, 908944), (25280, 795326), (35392, 568090), (44240, 454472), (50560, 397663), (56809, 353920), (70784, 284045), (88480, 227236), (113618, 176960)]