81517877

素因数分解:

$7^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1\times {\mathrm{509}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 94590720

約数和(自身を除く): 13072843

約数列:

[1, 7, 137, 167, 509, 959, 1169, 3563, 22879, 69733, 85003, 160153, 488131, 595021, 11645411, 81517877]

約数ペア:

[(1, 81517877), (7, 11645411), (137, 595021), (167, 488131), (509, 160153), (959, 85003), (1169, 69733), (3563, 22879)]