21713505

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7741}}^1$

素因数の和:7777

約数の個数: 32

約数和(自身を含む): 40134528

約数和(自身を除く): 18421023

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7741, 23223, 38705, 85151, 116115, 131597, 255453, 394791, 425755, 657985, 1277265, 1447567, 1973955, 4342701, 7237835, 21713505]

約数ペア:

[(1, 21713505), (3, 7237835), (5, 4342701), (11, 1973955), (15, 1447567), (17, 1277265), (33, 657985), (51, 425755), (55, 394791), (85, 255453), (165, 131597), (187, 116115), (255, 85151), (561, 38705), (935, 23223), (2805, 7741)]