21603020

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5483}}^1$

素因数の和:5689

約数の個数: 24

約数和(自身を含む): 45604944

約数和(自身を除く): 24001924

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5483, 10966, 21932, 27415, 54830, 109660, 1080151, 2160302, 4320604, 5400755, 10801510, 21603020]

約数ペア:

[(1, 21603020), (2, 10801510), (4, 5400755), (5, 4320604), (10, 2160302), (20, 1080151), (197, 109660), (394, 54830), (788, 27415), (985, 21932), (1970, 10966), (3940, 5483)]