20451531

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 29855232

約数和(自身を除く): 9403701

約数列:

[1, 3, 23, 43, 61, 69, 113, 129, 183, 339, 989, 1403, 2599, 2623, 2967, 4209, 4859, 6893, 7797, 7869, 14577, 20679, 60329, 111757, 158539, 180987, 296399, 335271, 475617, 889197, 6817177, 20451531]

約数ペア:

[(1, 20451531), (3, 6817177), (23, 889197), (43, 475617), (61, 335271), (69, 296399), (113, 180987), (129, 158539), (183, 111757), (339, 60329), (989, 20679), (1403, 14577), (2599, 7869), (2623, 7797), (2967, 6893), (4209, 4859)]