21188930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{719}}^1$

素因数の和:1154

約数の個数: 32

約数和(自身を含む): 43752960

約数和(自身を除く): 22564030

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 421, 719, 842, 1438, 2105, 2947, 3595, 4210, 5033, 5894, 7190, 10066, 14735, 25165, 29470, 50330, 302699, 605398, 1513495, 2118893, 3026990, 4237786, 10594465, 21188930]

約数ペア:

[(1, 21188930), (2, 10594465), (5, 4237786), (7, 3026990), (10, 2118893), (14, 1513495), (35, 605398), (70, 302699), (421, 50330), (719, 29470), (842, 25165), (1438, 14735), (2105, 10066), (2947, 7190), (3595, 5894), (4210, 5033)]