21979789

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:181

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 4873331

約数列:

[1, 13, 19, 23, 53, 73, 247, 299, 437, 689, 949, 1007, 1219, 1387, 1679, 3869, 5681, 13091, 15847, 18031, 21827, 23161, 31901, 50297, 73511, 88987, 301093, 414713, 955643, 1156831, 1690753, 21979789]

約数ペア:

[(1, 21979789), (13, 1690753), (19, 1156831), (23, 955643), (53, 414713), (73, 301093), (247, 88987), (299, 73511), (437, 50297), (689, 31901), (949, 23161), (1007, 21827), (1219, 18031), (1387, 15847), (1679, 13091), (3869, 5681)]