221001

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:232

約数の個数: 16

約数和(自身を含む): 331968

約数和(自身を除く): 110967

約数列:

[1, 3, 11, 33, 37, 111, 181, 407, 543, 1221, 1991, 5973, 6697, 20091, 73667, 221001]

約数ペア:

[(1, 221001), (3, 73667), (11, 20091), (33, 6697), (37, 5973), (111, 1991), (181, 1221), (407, 543)]