20347444

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 20012876

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 103, 116, 131, 206, 262, 377, 412, 524, 754, 1339, 1508, 1703, 2678, 2987, 3406, 3799, 5356, 5974, 6812, 7598, 11948, 13493, 15196, 26986, 38831, 49387, 53972, 77662, 98774, 155324, 175409, 197548, 350818, 391297, 701636, 782594, 1565188, 5086861, 10173722, 20347444]

約数ペア:

[(1, 20347444), (2, 10173722), (4, 5086861), (13, 1565188), (26, 782594), (29, 701636), (52, 391297), (58, 350818), (103, 197548), (116, 175409), (131, 155324), (206, 98774), (262, 77662), (377, 53972), (412, 49387), (524, 38831), (754, 26986), (1339, 15196), (1508, 13493), (1703, 11948), (2678, 7598), (2987, 6812), (3406, 5974), (3799, 5356)]