18278253

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6173}}^1$

素因数の和:6233

約数の個数: 24

約数和(自身を含む): 30820608

約数和(自身を除く): 12542355

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6173, 18519, 43211, 55557, 129633, 290131, 388899, 870393, 2030917, 2611179, 6092751, 18278253]

約数ペア:

[(1, 18278253), (3, 6092751), (7, 2611179), (9, 2030917), (21, 870393), (47, 388899), (63, 290131), (141, 129633), (329, 55557), (423, 43211), (987, 18519), (2961, 6173)]