20721036380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10499}}^1\times {\mathrm{8971}}^1$

素因数の和:19490

約数の個数: 48

約数和(自身を含む): 47479824000

約数和(自身を除く): 26758787620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 8971, 10499, 17942, 20998, 35884, 41996, 44855, 52495, 89710, 98681, 104990, 115489, 179420, 197362, 209980, 230978, 394724, 461956, 493405, 577445, 986810, 1154890, 1973620, 2309780, 94186529, 188373058, 376746116, 470932645, 941865290, 1036051819, 1883730580, 2072103638, 4144207276, 5180259095, 10360518190, 20721036380]

約数ペア:

[(1, 20721036380), (2, 10360518190), (4, 5180259095), (5, 4144207276), (10, 2072103638), (11, 1883730580), (20, 1036051819), (22, 941865290), (44, 470932645), (55, 376746116), (110, 188373058), (220, 94186529), (8971, 2309780), (10499, 1973620), (17942, 1154890), (20998, 986810), (35884, 577445), (41996, 493405), (44855, 461956), (52495, 394724), (89710, 230978), (98681, 209980), (104990, 197362), (115489, 179420)]