20005005

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4129}}^1$

素因数の和:4173

約数の個数: 32

約数和(自身を含む): 35683200

約数和(自身を除く): 15678195

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4129, 4845, 12387, 20645, 61935, 70193, 78451, 210579, 235353, 350965, 392255, 1052895, 1176765, 1333667, 4001001, 6668335, 20005005]

約数ペア:

[(1, 20005005), (3, 6668335), (5, 4001001), (15, 1333667), (17, 1176765), (19, 1052895), (51, 392255), (57, 350965), (85, 235353), (95, 210579), (255, 78451), (285, 70193), (323, 61935), (969, 20645), (1615, 12387), (4129, 4845)]