638248891

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{563}}^1\times {\mathrm{2281}}^1$

素因数の和:2922

約数の個数: 16

約数和(自身を含む): 741339648

約数和(自身を除く): 103090757

約数列:

[1, 7, 71, 497, 563, 2281, 3941, 15967, 39973, 161951, 279811, 1133657, 1284203, 8989421, 91178413, 638248891]

約数ペア:

[(1, 638248891), (7, 91178413), (71, 8989421), (497, 1284203), (563, 1133657), (2281, 279811), (3941, 161951), (15967, 39973)]