21831887

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 28600320

約数和(自身を除く): 6768433

約数列:

[1, 7, 11, 37, 77, 79, 97, 259, 407, 553, 679, 869, 1067, 2849, 2923, 3589, 6083, 7469, 7663, 20461, 25123, 32153, 39479, 53641, 84293, 225071, 276353, 283531, 590051, 1984717, 3118841, 21831887]

約数ペア:

[(1, 21831887), (7, 3118841), (11, 1984717), (37, 590051), (77, 283531), (79, 276353), (97, 225071), (259, 84293), (407, 53641), (553, 39479), (679, 32153), (869, 25123), (1067, 20461), (2849, 7663), (2923, 7469), (3589, 6083)]