19996756

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29581}}^1$

素因数の和:29611

約数の個数: 18

約数和(自身を含む): 37894542

約数和(自身を除く): 17897786

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 29581, 59162, 118324, 384553, 769106, 1538212, 4999189, 9998378, 19996756]

約数ペア:

[(1, 19996756), (2, 9998378), (4, 4999189), (13, 1538212), (26, 769106), (52, 384553), (169, 118324), (338, 59162), (676, 29581)]