20505951

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 30351360

約数和(自身を除く): 9845409

約数列:

[1, 3, 9, 79, 151, 191, 237, 453, 573, 711, 1359, 1719, 11929, 15089, 28841, 35787, 45267, 86523, 107361, 135801, 259569, 2278439, 6835317, 20505951]

約数ペア:

[(1, 20505951), (3, 6835317), (9, 2278439), (79, 259569), (151, 135801), (191, 107361), (237, 86523), (453, 45267), (573, 35787), (711, 28841), (1359, 15089), (1719, 11929)]