21194421

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1\times {\mathrm{653}}^1$

素因数の和:1036

約数の個数: 16

約数和(自身を含む): 29299200

約数和(自身を除く): 8104779

約数列:

[1, 3, 31, 93, 349, 653, 1047, 1959, 10819, 20243, 32457, 60729, 227897, 683691, 7064807, 21194421]

約数ペア:

[(1, 21194421), (3, 7064807), (31, 683691), (93, 227897), (349, 60729), (653, 32457), (1047, 20243), (1959, 10819)]