20980377

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 35223552

約数和(自身を除く): 14243175

約数列:

[1, 3, 9, 11, 27, 33, 47, 81, 99, 141, 167, 243, 297, 423, 501, 517, 891, 1269, 1503, 1551, 1837, 2673, 3807, 4509, 4653, 5511, 7849, 11421, 13527, 13959, 16533, 23547, 40581, 41877, 49599, 70641, 86339, 125631, 148797, 211923, 259017, 446391, 635769, 777051, 1907307, 2331153, 6993459, 20980377]

約数ペア:

[(1, 20980377), (3, 6993459), (9, 2331153), (11, 1907307), (27, 777051), (33, 635769), (47, 446391), (81, 259017), (99, 211923), (141, 148797), (167, 125631), (243, 86339), (297, 70641), (423, 49599), (501, 41877), (517, 40581), (891, 23547), (1269, 16533), (1503, 13959), (1551, 13527), (1837, 11421), (2673, 7849), (3807, 5511), (4509, 4653)]