81254789

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{647}}^1$

素因数の和:905

約数の個数: 24

約数和(自身を含む): 103716288

約数和(自身を除く): 22461499

約数列:

[1, 7, 11, 49, 77, 233, 539, 647, 1631, 2563, 4529, 7117, 11417, 17941, 31703, 49819, 125587, 150751, 348733, 1055257, 1658261, 7386799, 11607827, 81254789]

約数ペア:

[(1, 81254789), (7, 11607827), (11, 7386799), (49, 1658261), (77, 1055257), (233, 348733), (539, 150751), (647, 125587), (1631, 49819), (2563, 31703), (4529, 17941), (7117, 11417)]