21798108

素因数分解:

$2^2\times 3^2\times {\mathrm{605503}}^1$

素因数の和:605513

約数の個数: 18

約数和(自身を含む): 55100864

約数和(自身を除く): 33302756

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 605503, 1211006, 1816509, 2422012, 3633018, 5449527, 7266036, 10899054, 21798108]

約数ペア:

[(1, 21798108), (2, 10899054), (3, 7266036), (4, 5449527), (6, 3633018), (9, 2422012), (12, 1816509), (18, 1211006), (36, 605503)]