81878121

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{25919}}^1$

素因数の和:25947

約数の個数: 24

約数和(自身を含む): 132088320

約数和(自身を除く): 50210199

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 25919, 77757, 233271, 336947, 699813, 1010841, 2099439, 3032523, 6298317, 9097569, 27292707, 81878121]

約数ペア:

[(1, 81878121), (3, 27292707), (9, 9097569), (13, 6298317), (27, 3032523), (39, 2099439), (81, 1010841), (117, 699813), (243, 336947), (351, 233271), (1053, 77757), (3159, 25919)]