20217057

素因数分解:

$3^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1657}}^1$

素因数の和:1757

約数の個数: 24

約数和(自身を含む): 31754016

約数和(自身を除く): 11536959

約数列:

[1, 3, 7, 21, 49, 83, 147, 249, 581, 1657, 1743, 4067, 4971, 11599, 12201, 34797, 81193, 137531, 243579, 412593, 962717, 2888151, 6739019, 20217057]

約数ペア:

[(1, 20217057), (3, 6739019), (7, 2888151), (21, 962717), (49, 412593), (83, 243579), (147, 137531), (249, 81193), (581, 34797), (1657, 12201), (1743, 11599), (4067, 4971)]