19911636

素因数分解:

$2^2\times 3^3\times {\mathrm{331}}^1\times {\mathrm{557}}^1$

素因数の和:901

約数の個数: 48

約数和(自身を含む): 51871680

約数和(自身を除く): 31960044

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 331, 557, 662, 993, 1114, 1324, 1671, 1986, 2228, 2979, 3342, 3972, 5013, 5958, 6684, 8937, 10026, 11916, 15039, 17874, 20052, 30078, 35748, 60156, 184367, 368734, 553101, 737468, 1106202, 1659303, 2212404, 3318606, 4977909, 6637212, 9955818, 19911636]

約数ペア:

[(1, 19911636), (2, 9955818), (3, 6637212), (4, 4977909), (6, 3318606), (9, 2212404), (12, 1659303), (18, 1106202), (27, 737468), (36, 553101), (54, 368734), (108, 184367), (331, 60156), (557, 35748), (662, 30078), (993, 20052), (1114, 17874), (1324, 15039), (1671, 11916), (1986, 10026), (2228, 8937), (2979, 6684), (3342, 5958), (3972, 5013)]