20802880

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:312

約数の個数: 112

約数和(自身を含む): 58375296

約数和(自身を除く): 37572416

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 56, 64, 70, 74, 80, 112, 140, 148, 160, 185, 224, 251, 259, 280, 296, 320, 370, 448, 502, 518, 560, 592, 740, 1004, 1036, 1120, 1184, 1255, 1295, 1480, 1757, 2008, 2072, 2240, 2368, 2510, 2590, 2960, 3514, 4016, 4144, 5020, 5180, 5920, 7028, 8032, 8288, 8785, 9287, 10040, 10360, 11840, 14056, 16064, 16576, 17570, 18574, 20080, 20720, 28112, 35140, 37148, 40160, 41440, 46435, 56224, 65009, 70280, 74296, 80320, 82880, 92870, 112448, 130018, 140560, 148592, 185740, 260036, 281120, 297184, 325045, 371480, 520072, 562240, 594368, 650090, 742960, 1040144, 1300180, 1485920, 2080288, 2600360, 2971840, 4160576, 5200720, 10401440, 20802880]

約数ペア:

[(1, 20802880), (2, 10401440), (4, 5200720), (5, 4160576), (7, 2971840), (8, 2600360), (10, 2080288), (14, 1485920), (16, 1300180), (20, 1040144), (28, 742960), (32, 650090), (35, 594368), (37, 562240), (40, 520072), (56, 371480), (64, 325045), (70, 297184), (74, 281120), (80, 260036), (112, 185740), (140, 148592), (148, 140560), (160, 130018), (185, 112448), (224, 92870), (251, 82880), (259, 80320), (280, 74296), (296, 70280), (320, 65009), (370, 56224), (448, 46435), (502, 41440), (518, 40160), (560, 37148), (592, 35140), (740, 28112), (1004, 20720), (1036, 20080), (1120, 18574), (1184, 17570), (1255, 16576), (1295, 16064), (1480, 14056), (1757, 11840), (2008, 10360), (2072, 10040), (2240, 9287), (2368, 8785), (2510, 8288), (2590, 8032), (2960, 7028), (3514, 5920), (4016, 5180), (4144, 5020)]