20899681465

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{87683}}^1$

素因数の和:87913

約数の個数: 32

約数和(自身を含む): 28577969280

約数和(自身を除く): 7678287815

約数列:

[1, 5, 13, 19, 65, 95, 193, 247, 965, 1235, 2509, 3667, 12545, 18335, 47671, 87683, 238355, 438415, 1139879, 1665977, 5699395, 8329885, 16922819, 21657701, 84614095, 108288505, 219996647, 321533561, 1099983235, 1607667805, 4179936293, 20899681465]

約数ペア:

[(1, 20899681465), (5, 4179936293), (13, 1607667805), (19, 1099983235), (65, 321533561), (95, 219996647), (193, 108288505), (247, 84614095), (965, 21657701), (1235, 16922819), (2509, 8329885), (3667, 5699395), (12545, 1665977), (18335, 1139879), (47671, 438415), (87683, 238355)]