20655425

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 31819392

約数和(自身を除く): 11163967

約数列:

[1, 5, 7, 17, 25, 35, 53, 85, 119, 131, 175, 265, 371, 425, 595, 655, 901, 917, 1325, 1855, 2227, 2975, 3275, 4505, 4585, 6307, 6943, 9275, 11135, 15589, 22525, 22925, 31535, 34715, 48601, 55675, 77945, 118031, 157675, 173575, 243005, 389725, 590155, 826217, 1215025, 2950775, 4131085, 20655425]

約数ペア:

[(1, 20655425), (5, 4131085), (7, 2950775), (17, 1215025), (25, 826217), (35, 590155), (53, 389725), (85, 243005), (119, 173575), (131, 157675), (175, 118031), (265, 77945), (371, 55675), (425, 48601), (595, 34715), (655, 31535), (901, 22925), (917, 22525), (1325, 15589), (1855, 11135), (2227, 9275), (2975, 6943), (3275, 6307), (4505, 4585)]