20123907

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 29568000

約数和(自身を除く): 9444093

約数列:

[1, 3, 19, 41, 57, 79, 109, 123, 237, 327, 779, 1501, 2071, 2337, 3239, 4469, 4503, 6213, 8611, 9717, 13407, 25833, 61541, 84911, 163609, 184623, 254733, 353051, 490827, 1059153, 6707969, 20123907]

約数ペア:

[(1, 20123907), (3, 6707969), (19, 1059153), (41, 490827), (57, 353051), (79, 254733), (109, 184623), (123, 163609), (237, 84911), (327, 61541), (779, 25833), (1501, 13407), (2071, 9717), (2337, 8611), (3239, 6213), (4469, 4503)]