21000657668

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16254379}}^1$

素因数の和:16254419

約数の個数: 24

約数和(自身を含む): 40961037600

約数和(自身を除く): 19960379932

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16254379, 32508758, 65017516, 276324443, 308833201, 552648886, 617666402, 1105297772, 1235332804, 5250164417, 10500328834, 21000657668]

約数ペア:

[(1, 21000657668), (2, 10500328834), (4, 5250164417), (17, 1235332804), (19, 1105297772), (34, 617666402), (38, 552648886), (68, 308833201), (76, 276324443), (323, 65017516), (646, 32508758), (1292, 16254379)]