21870615

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5903}}^1$

素因数の和:5943

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 17804265

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 95, 195, 247, 285, 741, 1235, 3705, 5903, 17709, 29515, 76739, 88545, 112157, 230217, 336471, 383695, 560785, 1151085, 1458041, 1682355, 4374123, 7290205, 21870615]

約数ペア:

[(1, 21870615), (3, 7290205), (5, 4374123), (13, 1682355), (15, 1458041), (19, 1151085), (39, 560785), (57, 383695), (65, 336471), (95, 230217), (195, 112157), (247, 88545), (285, 76739), (741, 29515), (1235, 17709), (3705, 5903)]