21018807

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{1217}}^1$

素因数の和:1343

約数の個数: 24

約数和(自身を含む): 32301360

約数和(自身を除く): 11282553

約数列:

[1, 3, 9, 19, 57, 101, 171, 303, 909, 1217, 1919, 3651, 5757, 10953, 17271, 23123, 69369, 122917, 208107, 368751, 1106253, 2335423, 7006269, 21018807]

約数ペア:

[(1, 21018807), (3, 7006269), (9, 2335423), (19, 1106253), (57, 368751), (101, 208107), (171, 122917), (303, 69369), (909, 23123), (1217, 17271), (1919, 10953), (3651, 5757)]