218935715

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{2129}}^1$

素因数の和:2422

約数の個数: 16

約数和(自身を含む): 266539680

約数和(自身を除く): 47603965

約数列:

[1, 5, 131, 157, 655, 785, 2129, 10645, 20567, 102835, 278899, 334253, 1394495, 1671265, 43787143, 218935715]

約数ペア:

[(1, 218935715), (5, 43787143), (131, 1671265), (157, 1394495), (655, 334253), (785, 278899), (2129, 102835), (10645, 20567)]