20955561

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 31795200

約数和(自身を除く): 10839639

約数列:

[1, 3, 11, 33, 47, 59, 141, 177, 229, 517, 649, 687, 1551, 1947, 2519, 2773, 7557, 8319, 10763, 13511, 30503, 32289, 40533, 91509, 118393, 148621, 355179, 445863, 635017, 1905051, 6985187, 20955561]

約数ペア:

[(1, 20955561), (3, 6985187), (11, 1905051), (33, 635017), (47, 445863), (59, 355179), (141, 148621), (177, 118393), (229, 91509), (517, 40533), (649, 32289), (687, 30503), (1551, 13511), (1947, 10763), (2519, 8319), (2773, 7557)]