21980124

素因数分解:

$2^2\times 3^2\times {\mathrm{610559}}^1$

素因数の和:610569

約数の個数: 18

約数和(自身を含む): 55560960

約数和(自身を除く): 33580836

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 610559, 1221118, 1831677, 2442236, 3663354, 5495031, 7326708, 10990062, 21980124]

約数ペア:

[(1, 21980124), (2, 10990062), (3, 7326708), (4, 5495031), (6, 3663354), (9, 2442236), (12, 1831677), (18, 1221118), (36, 610559)]