20505028

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{4423}}^1$

素因数の和:4507

約数の個数: 24

約数和(自身を含む): 38400320

約数和(自身を除く): 17895292

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 244, 1159, 2318, 4423, 4636, 8846, 17692, 84037, 168074, 269803, 336148, 539606, 1079212, 5126257, 10252514, 20505028]

約数ペア:

[(1, 20505028), (2, 10252514), (4, 5126257), (19, 1079212), (38, 539606), (61, 336148), (76, 269803), (122, 168074), (244, 84037), (1159, 17692), (2318, 8846), (4423, 4636)]