21380458925

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1\times {\mathrm{5101}}^1$

素因数の和:5718

約数の個数: 48

約数和(自身を含む): 31065547392

約数和(自身を除く): 9685088467

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 557, 1075, 1505, 2785, 3899, 5101, 7525, 13925, 19495, 23951, 25505, 35707, 97475, 119755, 127525, 167657, 178535, 219343, 598775, 838285, 892675, 1096715, 1535401, 2841257, 4191425, 5483575, 7677005, 14206285, 19888799, 38385025, 71031425, 99443995, 122174051, 497219975, 610870255, 855218357, 3054351275, 4276091785, 21380458925]

約数ペア:

[(1, 21380458925), (5, 4276091785), (7, 3054351275), (25, 855218357), (35, 610870255), (43, 497219975), (175, 122174051), (215, 99443995), (301, 71031425), (557, 38385025), (1075, 19888799), (1505, 14206285), (2785, 7677005), (3899, 5483575), (5101, 4191425), (7525, 2841257), (13925, 1535401), (19495, 1096715), (23951, 892675), (25505, 838285), (35707, 598775), (97475, 219343), (119755, 178535), (127525, 167657)]