21603428

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{70141}}^1$

素因数の和:70163

約数の個数: 24

約数和(自身を含む): 47135424

約数和(自身を除く): 25531996

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 70141, 140282, 280564, 490987, 771551, 981974, 1543102, 1963948, 3086204, 5400857, 10801714, 21603428]

約数ペア:

[(1, 21603428), (2, 10801714), (4, 5400857), (7, 3086204), (11, 1963948), (14, 1543102), (22, 981974), (28, 771551), (44, 490987), (77, 280564), (154, 140282), (308, 70141)]