21319735

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{2767}}^1$

素因数の和:2862

約数の個数: 16

約数和(自身を含む): 27104256

約数和(自身を除く): 5784521

約数列:

[1, 5, 23, 67, 115, 335, 1541, 2767, 7705, 13835, 63641, 185389, 318205, 926945, 4263947, 21319735]

約数ペア:

[(1, 21319735), (5, 4263947), (23, 926945), (67, 318205), (115, 185389), (335, 63641), (1541, 13835), (2767, 7705)]