19660075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{277}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 26060832

約数和(自身を除く): 6400757

約数列:

[1, 5, 17, 25, 85, 167, 277, 425, 835, 1385, 2839, 4175, 4709, 6925, 14195, 23545, 46259, 70975, 117725, 231295, 786403, 1156475, 3932015, 19660075]

約数ペア:

[(1, 19660075), (5, 3932015), (17, 1156475), (25, 786403), (85, 231295), (167, 117725), (277, 70975), (425, 46259), (835, 23545), (1385, 14195), (2839, 6925), (4175, 4709)]