20970333

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:283

約数の個数: 40

約数和(自身を含む): 33724152

約数和(自身を除く): 12753819

約数列:

[1, 3, 9, 17, 27, 51, 81, 97, 153, 157, 291, 459, 471, 873, 1377, 1413, 1649, 2619, 2669, 4239, 4947, 7857, 8007, 12717, 14841, 15229, 24021, 44523, 45687, 72063, 133569, 137061, 216189, 258893, 411183, 776679, 1233549, 2330037, 6990111, 20970333]

約数ペア:

[(1, 20970333), (3, 6990111), (9, 2330037), (17, 1233549), (27, 776679), (51, 411183), (81, 258893), (97, 216189), (153, 137061), (157, 133569), (291, 72063), (459, 45687), (471, 44523), (873, 24021), (1377, 15229), (1413, 14841), (1649, 12717), (2619, 8007), (2669, 7857), (4239, 4947)]