19945926721

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{1667}}^1\times {\mathrm{7877}}^1$

素因数の和:9589

約数の個数: 24

約数和(自身を含む): 23968279296

約数和(自身を除く): 4022352575

約数列:

[1, 7, 31, 49, 217, 1519, 1667, 7877, 11669, 51677, 55139, 81683, 244187, 361739, 385973, 1709309, 2532173, 11965163, 13130959, 91916713, 407059729, 643416991, 2849418103, 19945926721]

約数ペア:

[(1, 19945926721), (7, 2849418103), (31, 643416991), (49, 407059729), (217, 91916713), (1519, 13130959), (1667, 11965163), (7877, 2532173), (11669, 1709309), (51677, 385973), (55139, 361739), (81683, 244187)]