31978881

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1889}}^1$

素因数の和:1931

約数の個数: 40

約数和(自身を含む): 54885600

約数和(自身を除く): 22906719

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 81, 99, 171, 209, 297, 513, 627, 891, 1539, 1881, 1889, 5643, 5667, 16929, 17001, 20779, 35891, 51003, 62337, 107673, 153009, 187011, 323019, 394801, 561033, 969057, 1184403, 1683099, 2907171, 3553209, 10659627, 31978881]

約数ペア:

[(1, 31978881), (3, 10659627), (9, 3553209), (11, 2907171), (19, 1683099), (27, 1184403), (33, 969057), (57, 561033), (81, 394801), (99, 323019), (171, 187011), (209, 153009), (297, 107673), (513, 62337), (627, 51003), (891, 35891), (1539, 20779), (1881, 17001), (1889, 16929), (5643, 5667)]