81307265

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{40351}}^1$

素因数の和:40400

約数の個数: 16

約数和(自身を含む): 108466176

約数和(自身を除く): 27158911

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 40351, 201755, 524563, 1250881, 2622815, 6254405, 16261453, 81307265]

約数ペア:

[(1, 81307265), (5, 16261453), (13, 6254405), (31, 2622815), (65, 1250881), (155, 524563), (403, 201755), (2015, 40351)]