20406738989

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{451207}}^1$

素因数の和:451305

約数の個数: 24

約数和(自身を含む): 25924606848

約数和(自身を除く): 5517867859

約数列:

[1, 7, 13, 49, 71, 91, 497, 637, 923, 3479, 6461, 45227, 451207, 3158449, 5865691, 22109143, 32035697, 41059837, 224249879, 287418859, 416464061, 1569749153, 2915248427, 20406738989]

約数ペア:

[(1, 20406738989), (7, 2915248427), (13, 1569749153), (49, 416464061), (71, 287418859), (91, 224249879), (497, 41059837), (637, 32035697), (923, 22109143), (3479, 5865691), (6461, 3158449), (45227, 451207)]