21237625

素因数分解:

$5^3\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:210

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7067015

約数列:

[1, 5, 23, 25, 83, 89, 115, 125, 415, 445, 575, 1909, 2047, 2075, 2225, 2875, 7387, 9545, 10235, 10375, 11125, 36935, 47725, 51175, 169901, 184675, 238625, 255875, 849505, 923375, 4247525, 21237625]

約数ペア:

[(1, 21237625), (5, 4247525), (23, 923375), (25, 849505), (83, 255875), (89, 238625), (115, 184675), (125, 169901), (415, 51175), (445, 47725), (575, 36935), (1909, 11125), (2047, 10375), (2075, 10235), (2225, 9545), (2875, 7387)]