21473860

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{11069}}^1$

素因数の和:11175

約数の個数: 24

約数和(自身を含む): 45564120

約数和(自身を除く): 24090260

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 11069, 22138, 44276, 55345, 110690, 221380, 1073693, 2147386, 4294772, 5368465, 10736930, 21473860]

約数ペア:

[(1, 21473860), (2, 10736930), (4, 5368465), (5, 4294772), (10, 2147386), (20, 1073693), (97, 221380), (194, 110690), (388, 55345), (485, 44276), (970, 22138), (1940, 11069)]