28379860

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21179}}^1$

素因数の和:21255

約数の個数: 24

約数和(自身を含む): 60490080

約数和(自身を除く): 32110220

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21179, 42358, 84716, 105895, 211790, 423580, 1418993, 2837986, 5675972, 7094965, 14189930, 28379860]

約数ペア:

[(1, 28379860), (2, 14189930), (4, 7094965), (5, 5675972), (10, 2837986), (20, 1418993), (67, 423580), (134, 211790), (268, 105895), (335, 84716), (670, 42358), (1340, 21179)]