21854225

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:377

約数の個数: 24

約数和(自身を含む): 28307712

約数和(自身を除く): 6453487

約数列:

[1, 5, 25, 31, 155, 163, 173, 775, 815, 865, 4075, 4325, 5053, 5363, 25265, 26815, 28199, 126325, 134075, 140995, 704975, 874169, 4370845, 21854225]

約数ペア:

[(1, 21854225), (5, 4370845), (25, 874169), (31, 704975), (155, 140995), (163, 134075), (173, 126325), (775, 28199), (815, 26815), (865, 25265), (4075, 5363), (4325, 5053)]