81972709

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{10853}}^1$

素因数の和:10956

約数の個数: 16

約数和(自身を含む): 102114432

約数和(自身を除く): 20141723

約数列:

[1, 7, 13, 83, 91, 581, 1079, 7553, 10853, 75971, 141089, 900799, 987623, 6305593, 11710387, 81972709]

約数ペア:

[(1, 81972709), (7, 11710387), (13, 6305593), (83, 987623), (91, 900799), (581, 141089), (1079, 75971), (7553, 10853)]