19514975

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{241}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 25206720

約数和(自身を除く): 5691745

約数列:

[1, 5, 25, 41, 79, 205, 241, 395, 1025, 1205, 1975, 3239, 6025, 9881, 16195, 19039, 49405, 80975, 95195, 247025, 475975, 780599, 3902995, 19514975]

約数ペア:

[(1, 19514975), (5, 3902995), (25, 780599), (41, 475975), (79, 247025), (205, 95195), (241, 80975), (395, 49405), (1025, 19039), (1205, 16195), (1975, 9881), (3239, 6025)]