2051216375

素因数分解:

$5^3\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{1091}}^1$

素因数の和:1221

約数の個数: 48

約数和(自身を含む): 2805697440

約数和(自身を除く): 754481065

約数列:

[1, 5, 13, 25, 65, 89, 125, 169, 325, 445, 845, 1091, 1157, 1625, 2225, 4225, 5455, 5785, 11125, 14183, 15041, 21125, 27275, 28925, 70915, 75205, 97099, 136375, 144625, 184379, 354575, 376025, 485495, 921895, 1262287, 1772875, 1880125, 2427475, 4609475, 6311435, 12137375, 16409731, 23047375, 31557175, 82048655, 157785875, 410243275, 2051216375]

約数ペア:

[(1, 2051216375), (5, 410243275), (13, 157785875), (25, 82048655), (65, 31557175), (89, 23047375), (125, 16409731), (169, 12137375), (325, 6311435), (445, 4609475), (845, 2427475), (1091, 1880125), (1157, 1772875), (1625, 1262287), (2225, 921895), (4225, 485495), (5455, 376025), (5785, 354575), (11125, 184379), (14183, 144625), (15041, 136375), (21125, 97099), (27275, 75205), (28925, 70915)]