18778705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{811}}^1$

素因数の和:1248

約数の個数: 16

約数和(自身を含む): 24671808

約数和(自身を除く): 5893103

約数列:

[1, 5, 11, 55, 421, 811, 2105, 4055, 4631, 8921, 23155, 44605, 341431, 1707155, 3755741, 18778705]

約数ペア:

[(1, 18778705), (5, 3755741), (11, 1707155), (55, 341431), (421, 44605), (811, 23155), (2105, 8921), (4055, 4631)]