21152019

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43793}}^1$

素因数の和:43826

約数の個数: 16

約数和(自身を含む): 33633792

約数和(自身を除く): 12481773

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 43793, 131379, 306551, 919653, 1007239, 3021717, 7050673, 21152019]

約数ペア:

[(1, 21152019), (3, 7050673), (7, 3021717), (21, 1007239), (23, 919653), (69, 306551), (161, 131379), (483, 43793)]