21971916

素因数分解:

$2^2\times 3^2\times {\mathrm{610331}}^1$

素因数の和:610341

約数の個数: 18

約数和(自身を含む): 55540212

約数和(自身を除く): 33568296

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 610331, 1220662, 1830993, 2441324, 3661986, 5492979, 7323972, 10985958, 21971916]

約数ペア:

[(1, 21971916), (2, 10985958), (3, 7323972), (4, 5492979), (6, 3661986), (9, 2441324), (12, 1830993), (18, 1220662), (36, 610331)]