21989978

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{6733}}^1$

素因数の和:6829

約数の個数: 16

約数和(自身を含む): 34909056

約数和(自身を除く): 12919078

約数列:

[1, 2, 23, 46, 71, 142, 1633, 3266, 6733, 13466, 154859, 309718, 478043, 956086, 10994989, 21989978]

約数ペア:

[(1, 21989978), (2, 10994989), (23, 956086), (46, 478043), (71, 309718), (142, 154859), (1633, 13466), (3266, 6733)]