4027985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2048

約数の個数: 16

約数和(自身を含む): 5376000

約数和(自身を除く): 1348015

約数列:

[1, 5, 13, 31, 65, 155, 403, 1999, 2015, 9995, 25987, 61969, 129935, 309845, 805597, 4027985]

約数ペア:

[(1, 4027985), (5, 805597), (13, 309845), (31, 129935), (65, 61969), (155, 25987), (403, 9995), (1999, 2015)]