19875037

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{761}}^1$

素因数の和:829

約数の個数: 24

約数和(自身を含む): 25539192

約数和(自身を除く): 5664155

約数列:

[1, 7, 13, 41, 49, 91, 287, 533, 637, 761, 2009, 3731, 5327, 9893, 26117, 31201, 37289, 69251, 218407, 405613, 484757, 1528849, 2839291, 19875037]

約数ペア:

[(1, 19875037), (7, 2839291), (13, 1528849), (41, 484757), (49, 405613), (91, 218407), (287, 69251), (533, 37289), (637, 31201), (761, 26117), (2009, 9893), (3731, 5327)]