19858540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76379}}^1$

素因数の和:76401

約数の個数: 24

約数和(自身を含む): 44911440

約数和(自身を除く): 25052900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76379, 152758, 305516, 381895, 763790, 992927, 1527580, 1985854, 3971708, 4964635, 9929270, 19858540]

約数ペア:

[(1, 19858540), (2, 9929270), (4, 4964635), (5, 3971708), (10, 1985854), (13, 1527580), (20, 992927), (26, 763790), (52, 381895), (65, 305516), (130, 152758), (260, 76379)]