20787487

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:550

約数の個数: 16

約数和(自身を含む): 24371200

約数和(自身を除く): 3583713

約数列:

[1, 7, 67, 127, 349, 469, 889, 2443, 8509, 23383, 44323, 59563, 163681, 310261, 2969641, 20787487]

約数ペア:

[(1, 20787487), (7, 2969641), (67, 310261), (127, 163681), (349, 59563), (469, 44323), (889, 23383), (2443, 8509)]