18857671

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1997}}^1$

素因数の和:2094

約数の個数: 16

約数和(自身を含む): 23016960

約数和(自身を除く): 4159289

約数列:

[1, 7, 19, 71, 133, 497, 1349, 1997, 9443, 13979, 37943, 141787, 265601, 992509, 2693953, 18857671]

約数ペア:

[(1, 18857671), (7, 2693953), (19, 992509), (71, 265601), (133, 141787), (497, 37943), (1349, 13979), (1997, 9443)]