20511469

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 5615891

約数列:

[1, 11, 17, 19, 23, 187, 209, 251, 253, 323, 391, 437, 2761, 3553, 4267, 4301, 4769, 4807, 5773, 7429, 46937, 52459, 63503, 81073, 81719, 98141, 109687, 891803, 1079551, 1206557, 1864679, 20511469]

約数ペア:

[(1, 20511469), (11, 1864679), (17, 1206557), (19, 1079551), (23, 891803), (187, 109687), (209, 98141), (251, 81719), (253, 81073), (323, 63503), (391, 52459), (437, 46937), (2761, 7429), (3553, 5773), (4267, 4807), (4301, 4769)]