128649872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{618509}}^1$

素因数の和:618530

約数の個数: 20

約数和(自身を含む): 268433340

約数和(自身を除く): 139783468

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 618509, 1237018, 2474036, 4948072, 8040617, 9896144, 16081234, 32162468, 64324936, 128649872]

約数ペア:

[(1, 128649872), (2, 64324936), (4, 32162468), (8, 16081234), (13, 9896144), (16, 8040617), (26, 4948072), (52, 2474036), (104, 1237018), (208, 618509)]