19881211

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{823}}^1$

素因数の和:883

約数の個数: 24

約数和(自身を含む): 25362720

約数和(自身を除く): 5481509

約数列:

[1, 7, 17, 29, 49, 119, 203, 493, 823, 833, 1421, 3451, 5761, 13991, 23867, 24157, 40327, 97937, 167069, 405739, 685559, 1169483, 2840173, 19881211]

約数ペア:

[(1, 19881211), (7, 2840173), (17, 1169483), (29, 685559), (49, 405739), (119, 167069), (203, 97937), (493, 40327), (823, 24157), (833, 23867), (1421, 13991), (3451, 5761)]