20844785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 28643328

約数和(自身を除く): 7798543

約数列:

[1, 5, 13, 23, 65, 73, 115, 191, 299, 365, 949, 955, 1495, 1679, 2483, 4393, 4745, 8395, 12415, 13943, 21827, 21965, 57109, 69715, 109135, 181259, 285545, 320689, 906295, 1603445, 4168957, 20844785]

約数ペア:

[(1, 20844785), (5, 4168957), (13, 1603445), (23, 906295), (65, 320689), (73, 285545), (115, 181259), (191, 109135), (299, 69715), (365, 57109), (949, 21965), (955, 21827), (1495, 13943), (1679, 12415), (2483, 8395), (4393, 4745)]