20830585

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{419}}^1$

素因数の和:648

約数の個数: 16

約数和(自身を含む): 25623360

約数和(自身を除く): 4792775

約数列:

[1, 5, 61, 163, 305, 419, 815, 2095, 9943, 25559, 49715, 68297, 127795, 341485, 4166117, 20830585]

約数ペア:

[(1, 20830585), (5, 4166117), (61, 341485), (163, 127795), (305, 68297), (419, 49715), (815, 25559), (2095, 9943)]