18902975

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1187}}^1$

素因数の和:1224

約数の個数: 36

約数和(自身を含む): 29388744

約数和(自身を除く): 10485769

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 175, 245, 325, 455, 637, 1187, 1225, 2275, 3185, 5935, 8309, 15431, 15925, 29675, 41545, 58163, 77155, 108017, 207725, 290815, 385775, 540085, 756119, 1454075, 2700425, 3780595, 18902975]

約数ペア:

[(1, 18902975), (5, 3780595), (7, 2700425), (13, 1454075), (25, 756119), (35, 540085), (49, 385775), (65, 290815), (91, 207725), (175, 108017), (245, 77155), (325, 58163), (455, 41545), (637, 29675), (1187, 15925), (1225, 15431), (2275, 8309), (3185, 5935)]