21079535

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 24

約数和(自身を含む): 27025488

約数和(自身を除く): 5945953

約数列:

[1, 5, 31, 41, 107, 155, 205, 535, 961, 1271, 3317, 4387, 4805, 6355, 16585, 21935, 39401, 102827, 135997, 197005, 514135, 679985, 4215907, 21079535]

約数ペア:

[(1, 21079535), (5, 4215907), (31, 679985), (41, 514135), (107, 197005), (155, 135997), (205, 102827), (535, 39401), (961, 21935), (1271, 16585), (3317, 6355), (4387, 4805)]