20212005

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{122497}}^1$

素因数の和:122516

約数の個数: 16

約数和(自身を含む): 35279424

約数和(自身を除く): 15067419

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 122497, 367491, 612485, 1347467, 1837455, 4042401, 6737335, 20212005]

約数ペア:

[(1, 20212005), (3, 6737335), (5, 4042401), (11, 1837455), (15, 1347467), (33, 612485), (55, 367491), (165, 122497)]