21160425

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1973}}^1$

素因数の和:2010

約数の個数: 48

約数和(自身を含む): 41122368

約数和(自身を除く): 19961943

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 143, 165, 195, 275, 325, 429, 715, 825, 975, 1973, 2145, 3575, 5919, 9865, 10725, 21703, 25649, 29595, 49325, 65109, 76947, 108515, 128245, 147975, 282139, 325545, 384735, 542575, 641225, 846417, 1410695, 1627725, 1923675, 4232085, 7053475, 21160425]

約数ペア:

[(1, 21160425), (3, 7053475), (5, 4232085), (11, 1923675), (13, 1627725), (15, 1410695), (25, 846417), (33, 641225), (39, 542575), (55, 384735), (65, 325545), (75, 282139), (143, 147975), (165, 128245), (195, 108515), (275, 76947), (325, 65109), (429, 49325), (715, 29595), (825, 25649), (975, 21703), (1973, 10725), (2145, 9865), (3575, 5919)]