20109320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6529}}^1$

素因数の和:6558

約数の個数: 64

約数和(自身を含む): 56419200

約数和(自身を除く): 36309880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6529, 13058, 26116, 32645, 45703, 52232, 65290, 71819, 91406, 130580, 143638, 182812, 228515, 261160, 287276, 359095, 365624, 457030, 502733, 574552, 718190, 914060, 1005466, 1436380, 1828120, 2010932, 2513665, 2872760, 4021864, 5027330, 10054660, 20109320]

約数ペア:

[(1, 20109320), (2, 10054660), (4, 5027330), (5, 4021864), (7, 2872760), (8, 2513665), (10, 2010932), (11, 1828120), (14, 1436380), (20, 1005466), (22, 914060), (28, 718190), (35, 574552), (40, 502733), (44, 457030), (55, 365624), (56, 359095), (70, 287276), (77, 261160), (88, 228515), (110, 182812), (140, 143638), (154, 130580), (220, 91406), (280, 71819), (308, 65290), (385, 52232), (440, 45703), (616, 32645), (770, 26116), (1540, 13058), (3080, 6529)]