21708501

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{5309}}^1$

素因数の和:5388

約数の個数: 16

約数和(自身を含む): 30585600

約数和(自身を除く): 8877099

約数列:

[1, 3, 29, 47, 87, 141, 1363, 4089, 5309, 15927, 153961, 249523, 461883, 748569, 7236167, 21708501]

約数ペア:

[(1, 21708501), (3, 7236167), (29, 748569), (47, 461883), (87, 249523), (141, 153961), (1363, 15927), (4089, 5309)]