217798975

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{251}}^1\times {\mathrm{569}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 276076080

約数和(自身を除く): 58277105

約数列:

[1, 5, 25, 61, 251, 305, 569, 1255, 1525, 2845, 6275, 14225, 15311, 34709, 76555, 142819, 173545, 382775, 714095, 867725, 3570475, 8711959, 43559795, 217798975]

約数ペア:

[(1, 217798975), (5, 43559795), (25, 8711959), (61, 3570475), (251, 867725), (305, 714095), (569, 382775), (1255, 173545), (1525, 142819), (2845, 76555), (6275, 34709), (14225, 15311)]