81789916

素因数分解:

$2^2\times {\mathrm{13}}^3\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 159536160

約数和(自身を除く): 77746244

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 169, 227, 338, 454, 533, 676, 908, 1066, 2132, 2197, 2951, 4394, 5902, 6929, 8788, 9307, 11804, 13858, 18614, 27716, 37228, 38363, 76726, 90077, 120991, 153452, 180154, 241982, 360308, 483964, 498719, 997438, 1572883, 1994876, 3145766, 6291532, 20447479, 40894958, 81789916]

約数ペア:

[(1, 81789916), (2, 40894958), (4, 20447479), (13, 6291532), (26, 3145766), (41, 1994876), (52, 1572883), (82, 997438), (164, 498719), (169, 483964), (227, 360308), (338, 241982), (454, 180154), (533, 153452), (676, 120991), (908, 90077), (1066, 76726), (2132, 38363), (2197, 37228), (2951, 27716), (4394, 18614), (5902, 13858), (6929, 11804), (8788, 9307)]