20522320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2819}}^1$

素因数の和:2852

約数の個数: 80

約数和(自身を含む): 58746240

約数和(自身を除く): 38223920

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2819, 3640, 5638, 7280, 11276, 14095, 19733, 22552, 28190, 36647, 39466, 45104, 56380, 73294, 78932, 98665, 112760, 146588, 157864, 183235, 197330, 225520, 256529, 293176, 315728, 366470, 394660, 513058, 586352, 732940, 789320, 1026116, 1282645, 1465880, 1578640, 2052232, 2565290, 2931760, 4104464, 5130580, 10261160, 20522320]

約数ペア:

[(1, 20522320), (2, 10261160), (4, 5130580), (5, 4104464), (7, 2931760), (8, 2565290), (10, 2052232), (13, 1578640), (14, 1465880), (16, 1282645), (20, 1026116), (26, 789320), (28, 732940), (35, 586352), (40, 513058), (52, 394660), (56, 366470), (65, 315728), (70, 293176), (80, 256529), (91, 225520), (104, 197330), (112, 183235), (130, 157864), (140, 146588), (182, 112760), (208, 98665), (260, 78932), (280, 73294), (364, 56380), (455, 45104), (520, 39466), (560, 36647), (728, 28190), (910, 22552), (1040, 19733), (1456, 14095), (1820, 11276), (2819, 7280), (3640, 5638)]