20981994

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{1237}}^1$

素因数の和:1510

約数の個数: 32

約数和(自身を含む): 45994176

約数和(自身を除く): 25012182

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 257, 514, 771, 1237, 1542, 2474, 2827, 3711, 5654, 7422, 8481, 13607, 16962, 27214, 40821, 81642, 317909, 635818, 953727, 1907454, 3496999, 6993998, 10490997, 20981994]

約数ペア:

[(1, 20981994), (2, 10490997), (3, 6993998), (6, 3496999), (11, 1907454), (22, 953727), (33, 635818), (66, 317909), (257, 81642), (514, 40821), (771, 27214), (1237, 16962), (1542, 13607), (2474, 8481), (2827, 7422), (3711, 5654)]