21985535

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{317}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 31413312

約数和(自身を除く): 9427777

約数列:

[1, 5, 11, 13, 55, 65, 97, 143, 317, 485, 715, 1067, 1261, 1585, 3487, 4121, 5335, 6305, 13871, 17435, 20605, 30749, 45331, 69355, 153745, 226655, 338239, 399737, 1691195, 1998685, 4397107, 21985535]

約数ペア:

[(1, 21985535), (5, 4397107), (11, 1998685), (13, 1691195), (55, 399737), (65, 338239), (97, 226655), (143, 153745), (317, 69355), (485, 45331), (715, 30749), (1067, 20605), (1261, 17435), (1585, 13871), (3487, 6305), (4121, 5335)]