18692225

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 24284160

約数和(自身を除く): 5591935

約数列:

[1, 5, 25, 31, 89, 155, 271, 445, 775, 1355, 2225, 2759, 6775, 8401, 13795, 24119, 42005, 68975, 120595, 210025, 602975, 747689, 3738445, 18692225]

約数ペア:

[(1, 18692225), (5, 3738445), (25, 747689), (31, 602975), (89, 210025), (155, 120595), (271, 68975), (445, 42005), (775, 24119), (1355, 13795), (2225, 8401), (2759, 6775)]