27990417

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 47548032

約数和(自身を除く): 19557615

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 97, 147, 151, 273, 291, 453, 637, 679, 1057, 1261, 1911, 1963, 2037, 3171, 3783, 4753, 5889, 7399, 8827, 13741, 14259, 14647, 22197, 26481, 41223, 43941, 61789, 96187, 102529, 185367, 190411, 288561, 307587, 571233, 717703, 1332877, 2153109, 3998631, 9330139, 27990417]

約数ペア:

[(1, 27990417), (3, 9330139), (7, 3998631), (13, 2153109), (21, 1332877), (39, 717703), (49, 571233), (91, 307587), (97, 288561), (147, 190411), (151, 185367), (273, 102529), (291, 96187), (453, 61789), (637, 43941), (679, 41223), (1057, 26481), (1261, 22197), (1911, 14647), (1963, 14259), (2037, 13741), (3171, 8827), (3783, 7399), (4753, 5889)]